The following two questions deal with a 1000kg car. 17) How high on a hill must an engineless resistance-free car start for its speed at the bottom to be 50m/sec. 18) This car is now on a flat turn of radius 500m and has a static coefficient of friction (ms) of 0.5 with the dry road. Find the maximum speed the car can travel at without skidding off the road (can he make it).

Weather forecasts are made using barometers. An air pressure gauge, or barometer When the barometer reads "rising," the air pressure is rising; when it reads "falling," the air pressure is lowering.

Barometric pressure, to put it simply, is the measurement of air pressure in the atmosphere, more particularly, the measurement of the weight exerted by air molecules at a certain location on Earth.

barometer, a tool for calculating atmospheric pressure. A barometer may also be used to determine height since air pressure varies with elevation above or below sea level. Mercury and aneroid barometers are the two primary varieties.

To know more about barometers visit:

https://brainly.com/question/26741242

#SPJ4

Answer:

Explanation:

If pressure was determined using the forearm or lower leg, we would expect to see different values for pressure in these two locations. This is because the two locations have different anatomical and physiological characteristics that can affect the measurement of pressure.

The forearm is closer to the heart and has a higher arterial pressure than the lower leg, which is farther away from the heart and has a lower arterial pressure. The difference in arterial pressure can lead to different readings of pressure in the forearm and lower leg. Additionally, the composition of tissue, such as muscle and bone, differs between the forearm and lower leg, which can also affect the measurement of pressure. For example, the lower leg has a larger proportion of muscle and bone, which may compress more easily than the soft tissue in the forearm, leading to lower pressure readings.

Another factor that can affect the measurement of pressure is the size of the limb being measured. A larger limb, such as the thigh, would have a larger surface area and more tissue to compress than a smaller limb, such as the forearm, which can also affect pressure measurements.

Therefore, if pressure was determined using the forearm or lower leg, we would expect to see different values for pressure in these two locations due to differences in arterial pressure, tissue composition, and limb size. It is important to use appropriate anatomical landmarks and positioning to ensure accurate and consistent measurement of pressure.

The wavelength of microwaves with a frequency of 10 GHz is 0.03 meters or 3 centimeters. These microwaves cause the water molecules in the burrito to vibrate due to the absorption of their energy, resulting in the heating of the food.

The wavelength of microwaves with a frequency of 10 GHz can be calculated using the formula λ = c/f, where λ represents wavelength, c is the speed of light (3 × 10^8 m/s), and f is the frequency (10^10 Hz). Therefore, the wavelength of these microwaves is 0.03 meters or 3 centimeters.

The relationship between wavelength, frequency, and the speed of light is given by the equation λ = c/f, where λ represents wavelength, c is the speed of light, and f is the frequency. In this case, we have a frequency of 10 GHz, which is equivalent to 10^10 Hz. Plugging these values into the equation, we get:

λ = c/f

= (3 × 10^8 m/s) / (10^10 Hz)

= 3 × 10^(-2) meters

= 0.03 meters

= 3 centimeters

Learn more about wavelength of microwaves :

https://brainly.com/question/31616989

#SPJ11

Answer:

24.5°C

Explanation:

The switch that adjusts the magnetic field to be either nearly uniform or have a strong gradient will affect the current in the two coils differently.

When the magnetic field is nearly uniform at the center, the current in both coils will remain relatively unchanged. The uniform field will not induce any significant voltage in the coils, so the current will flow through them as usual.

However, when the magnetic field has a strong gradient, the current in the two coils will be affected differently. The rapidly changing field will induce a voltage in the coils according to Faraday's law of electromagnetic induction. This induced voltage will result in a change in the current flowing through the coils. The magnitude and direction of the induced current will depend on the specific characteristics of the coils and the magnetic field gradient.

In summary, the switch that changes the magnetic field from uniform to having a strong gradient will induce a change in the current flowing through the coils due to the induced voltage.

Learn more about  magnetic field gradient.

https://brainly.com/question/31421539

#SPJ4

Answer:

If the sun's mass were to double without pushing or pulling on the Earth, then the Earth's orbit will change to an ellipse which brings it out to our current radius but spends most of its time closer to the sun. The tides would probably get even stronger then, particularly when our orbit takes us closer to the sun.

Explanation:

Answer:

Sexually transmitted diseases are spread by direct contact with bodily fluids.

Explanation:

if you have a disease you can give it to someone by having sex because your fluids go into or either combine

Answer:

B

Explanation:

Answer:

Explanation:

A simple pendulum consists of a mass (usually represented as a small object or bob) attached to a string or rod of negligible mass. The mass is free to swing back and forth under the influence of gravity.

In the figure, the point of suspension is denoted by "O," and the mass (bob) is represented by the small circle. The string or rod is represented by the vertical line connecting the point of suspension to the bob.

Amplitude:

The amplitude of a pendulum refers to the maximum displacement or swing of the bob from its equilibrium position. In the figure, the amplitude can be represented by the angle formed between the vertical position and the position of the bob when it swings to its maximum distance on one side. It is usually denoted by the symbol "A."

Effective Length:

The effective length of a pendulum refers to the distance from the point of suspension to the center of mass of the bob. It represents the distance over which the mass swings back and forth. In the figure, the effective length can be measured as the length of the string or rod from the point of suspension to the center of the bob. It is usually denoted by the symbol "L."

It is important to note that the amplitude and effective length of a simple pendulum affect its period of oscillation (the time taken for one complete swing). The relationship between these parameters and the period can be described by mathematical formulas.

Overall, the simple pendulum is a fundamental concept in physics and provides a simplified model for understanding oscillatory motion and the principles of periodic motion.

Approximately About 1 second will take to send a 12-megabyte (mb) file.

It refers to the fastest rate at which data can travel from a wireless client to a wireless router over a wireless link. At the application layer, user actions like file transfers and web content browsing take place. Compared to the rate at the physical layer, the rate at the application layer will be substantially lower.

What Internet Speed Is Best for Using Several Devices? According to the FCC, the best ISPs for households with two or more connected devices and moderate to heavy internet usage should have download speeds of at least 12 megabits per second (Mbps). It is advised to use 25 Mbps while using four or more devices.

Anywhere from 25 to 100 Mbps is considered to be an excellent internet speed.

Up to 2 devices can stream, browse the web, and check email at speeds of 25 Mbps. A few more individuals can stream in HD or even 4K, stream music, play games, surf social media, and work from home at speeds of 50 to 100 Mbps.

To know more about link speed visit:

https://brainly.com/question/18568130

#SPJ4

Astronomers consider heavy elements to be all elements besides hydrogen and helium. These elements include those that are heavier than iron, carbon, hydrogen, and uranium.

These elements are also referred to as "metals" in astronomical terms, even though they include non-metallic elements from the periodic table. Astronomers consider elements heavier than helium—such as carbon, nitrogen, oxygen, neon, magnesium, silicon, sulfur, chlorine, argon, calcium, iron, and others—as heavy elements. These elements make up the bulk of the matter in the universe, and they are essential for the formation of stars, planets, and even life. Astronomers are particularly interested in these elements because they can provide valuable information about the formation and evolution of galaxies, stars, and other objects in the universe.

To learn more about heavy elements click here https://brainly.com/question/23089267

#SPJ11

Partial pressure of Ne = 23.47 atm

To find the partial pressure of Ne, we can use the formula:

Total pressure = Partial pressure of He + Partial pressure of Ne + Partial pressure of Ar

Substituting the given values, we get:

30.0 atm = 3.85 atm + Partial pressure of Ne + 2.68 atm

Solving for Partial pressure of Ne, we get:

Partial pressure of Ne = 23.47 atm

Therefore, the partial pressure of Ne in the mixture is 23.47 atm.

Learn more about pressure here:

https://brainly.com/question/30482677

#SPJ11

The sky on Earth is blue because blue light is scattered through the atmosphere as the other colors of light pass through undisturbed. Dark nebulae  have something similar going on.

Nebulae are interstellar dust and gas clouds that get backlighting from stars both inside and behind them. The clouds are illuminated by the photons from these stars that are dispersed throughout them. A nebula does not generate most of the light that appears to come from it; rather, it reflects and refracted light.

A dark nebula, also known as an absorption nebula, is a form of interstellar cloud, particularly a molecular cloud, that is so dense that it absorbs all of the light from objects behind it, including emission or reflection nebulae and background stars, at visible wavelengths.

Learn more about nebulae here:

https://brainly.com/question/477841

#SPJ6

The reading on the thermometer after 3 more minutes will be -13∘C. The thermometer will never read -4∘C after being taken outdoors.

To solve this problem, we can assume that the rate of change in temperature follows a linear pattern.

Let's first calculate the rate of change in temperature per minute:

Rate of change = (Final temperature - Initial temperature) / Time

a) After one minute:

Rate of change = (11∘C - 19∘C) / 1 minute = -8∘C/minute

To find the reading on the thermometer after 3 more minutes, we can multiply the rate of change by the time:

Change in temperature = Rate of change × Time

After 3 more minutes:

Change in temperature = -8∘C/minute × 3 minutes = -24∘C

The initial temperature was 11∘C, so the final temperature after 3 more minutes will be:

Final temperature = Initial temperature + Change in temperature = 11∘C - 24∘C = -13∘C

b) To find when the thermometer will read -4∘C, we need to determine the time it takes for the temperature to change from -5∘C to -4∘C.

Rate of change = (-4∘C - (-5∘C)) / Time

Rate of change = 1∘C / Time

We can rearrange the equation to solve for time:

Time = 1∘C / Rate of change

Substituting the given rate of change:

Time = 1∘C / (-8∘C/minute) = -1/8 minute

Since time cannot be negative, we can conclude that the thermometer will never read -4∘C after being taken outdoors.

Please note that this calculation assumes a linear rate of change in temperature, which might not hold true in all situations.

Learn more about thermometer here: https://brainly.com/question/33462606

#SPJ11

The force exerted on the rope by the child is 71.8 N.

Weight of the sled holding by the child, W = 82 N

Angle of inclination, θ = 29°

The component of weight acting downwards,

Wx = mg sinθ

Wx = 82 x sin 29°

Wx = 82 x 0.485

Wx = 39.8 N

Given that the surface of the hill is frictionless. So, the force of friction will be zero.

Therefore, force exerted on the rope by the child,

F = mg cosθ

F = 82 cos29°

F = 82 x 0.875

F = 71.8

To learn more about force, click:

https://brainly.com/question/14514652

#SPJ1

From 0.08 to 150 (or more) fold the mass of the Sun, stars' masses fall within this range.

The mass of a star affects its life cycle. Its life cycle is shorter the greater its bulk. The amount of available stuff in a star's nebula, the enormous cloud of gas and dust in which it was born, determines the star's mass.

The majority of the galaxy's stars are red dwarf stars, but they are too faint to be seen from Earth with the human eye and remain hidden in the background. Their lifespans, which are much longer than that of the sun, are prolonged by their limited brilliance.

To know more about stars span  visit:

https://brainly.com/question/4324220

#SPJ4

Answer:

Density is the degree of compactness in an object.

Explanation:

S.I unit is kg/m3

Answer:

The mass of the paraffin is 70g

Explanation:

You have to subtract the mass of the empty beaker from that of the empty beaker and paraffin oil to get the mass of the paraffin oil

if the power factor is to be improved to 0.95 lagging. So the value of the capacitor (in farads) that needs to be connected in parallel with the motor is 50.9 μF

To calculate the required capacitance to improve the power factor of the motor, we need to use the formula:

         C = (Q × tan θ1 - Q × tan θ2) / (ω × V^2)

where:

C = capacitance in farads

Q = reactive power in volt-amperes reactive (VAR)

θ1 = initial power factor angle

θ2 = final power factor angle

ω = angular frequency of the AC current (2πf where f is the frequency in Hz)

V = voltage in volts

The data we get from the question is

Power (P) = 10 kW = 10,000 W

Voltage (V) = 220 V

Initial power factor (pf1) = 0.7 lagging

Final power factor (pf2) = 0.95 lagging

First, we need to calculate the initial reactive power (Q1) of the motor using the formula:

      Q1 = P × tan θ1

      Q1 = 10,000 × tan (cos^-1(pf1))

      Q1 = 6,020 VAR

Next, we need to calculate the final reactive power (Q2) of the motor using the formula:

        Q2 = P × tan θ2

        Q2 = 10,000 × tan (cos^-1(pf2))

       Q2 = 2,760 VAR

Now, we can calculate the required capacitance using the formula:

        C = (Q1 - Q2) / (ω × V^2 × (tan θ1 - tan θ2))

The angular frequency (ω) of the AC current can be calculated as:

      ω = 2π × 60 Hz (assuming a standard 60 Hz frequency)

Therefore, we have:

               C = (6,020 - 2,760) / (2π × 60 × 220^2 × (tan(cos^-1(0.7)) - tan(cos^-1(0.95))))

                C ≈ 50.9 μF

Therefore, the value of the capacitor that needs to be connected in parallel with the motor is approximately 50.9 μF.

To learn more about the value of the capacitor visit: https://brainly.com/question/27393410

#SPJ11

the value of the capacitor in farads required to improve the power factor of the motor from 0.7 to 0.95 lagging is 11.222 µF.

Power of the motor = 10 kW, Voltage = 220 V, Power factor (initial) = 0.7, Power factor (final) = 0.95, Lagging power factor (since cos Φ is given as 0.7 and 0.95 in the question, where Φ is the angle between the voltage and current). The required value of capacitance is to be found.

Let C be the capacitance required to be connected in parallel with the motor. Then the value of the capacitance can be calculated by The power factor is given by the ratio of true power to apparent power. Since the apparent power is V × I where V is the voltage and I is the current drawn by the motor, and true power is V × I × cosΦ, substituting these values in the formula of power factor yields. We can substitute the given values in the equation for the initial and final power factor values.

Hence, we get the initial current drawn and the final current drawn. We can then find the initial and final reactances using the power formula. Substituting the values in the above equation, we get the current drawn by the motor initially to be.

V × I × cosΦ= 220 × 10Kw × cos 0.95 = 11.222 µF

Therefore, the value of the capacitor in farads required to improve the power factor of the motor from 0.7 to 0.95 lagging is 11.222 µF.

Learn more about power factor at: https://brainly.com/question/11957513

#SPJ11

The International Space Station (ISS) has both gravitational potential energy (PE) and kinetic energy (KE). PE is the energy an object possesses due to its position in a gravitational field, while KE is the energy an object possesses due to its motion. Both energies are essential for the ISS to maintain a stable orbit.

The International Space Station (ISS) orbits Earth at an altitude of approximately 408 kilometers. While it is true that the ISS is in a state of constant freefall, it still experiences gravitational force due to Earth's gravitational pull. This gravitational force allows the space station to remain in its orbit, otherwise, it would drift off into space. The ISS has both potential energy (PE) and kinetic energy (KE) due to its orbit around the Earth. PE refers to the energy an object possesses due to its position, while KE refers to the energy an object possesses due to its motion. In the case of the ISS, its potential energy is determined by its distance from Earth's surface, and its kinetic energy is determined by its velocity as it orbits the planet. Thus, the ISS has both gravitational potential energy and kinetic energy.
To know more about gravitational potential energy  Visit:

https://brainly.com/question/3884855

#SPJ11

Answer:

where are the choices i think 100% that is my opinion

Answer:

Sheikh Hasina is the prime minister of Bangladesh.

Answer:

her name is Sheikh Hasina

The speed of the second bowling ball after collision is 1.55 m/s

Speed can be defined as the ratio of distance to time of a body.

To calculate the speed of the second bowling ball after collision, we use the formula below

Formula:

v = mu/m'................ Equation 1

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the second bowling ball is 1.55 m/s fast.

Learn more about speed here: https://brainly.com/question/17146782

#SPJ1

Answer:

My teacher said 36m when I asked her

Explanation:

HOPE THIS HELPS!!

The displacement of the minute hand between 6:00 pm and 6:15 pm is 9.899 cm.

To find the distance and displacement of the minute hand of a clock of radius 7 cm between 6:00 pm and 6:15 pm, we need to use the formulae below:

1. Distance = Arc length of the circle.

2. Displacement = Shortest distance between two points.

Arc length of the circle = (Angle/360) x 2πr Where: Angle is the angle covered by the minute hand.

r is the radius of the circle.

π is a constant with a value of 22/7 or 3.14.

Distance traveled by the minute hand between 6:00 pm and 6:15 pm The minute hand starts at 6 and travels 15 minutes to reach

3. Therefore, it covers an angle of 90 degrees (360/4). Arc length = (90/360) x 2 x 22/7 x 7 = 1/4 x 44 = 11 cm

Therefore, the distance traveled by the minute hand between 6:00 pm and 6:15 pm is 11 cm.

Displacement of the minute hand between 6:00 pm and 6:15 pm

The minute hand starts at 6 and ends at 3, which is a straight line distance.

Therefore, the displacement is equal to the length of a straight line drawn between the two points.

Using the Pythagorean Theorem, we can calculate the length of the straight line.

Length of straight line = √(AB² + BC²) = √(7² + 7²) = √(2 x 7²) = √98 = 9.899 cm (rounded to three significant figures)

Therefore, the displacement of the minute hand between 6:00 pm and 6:15 pm is 9.899 cm.

For more questions on displacement

https://brainly.com/question/28952425

#SPJ8

Answer:

it was helpful to you dear

Answer:

Explanation:

D)

Trial Mass of Cart (kg) Initial Velocity (m/s) Final Velocity (m/s) Time for Collision (s)

1 0.50 0.60 -0.52 0.030

2 0.50 0.53 -0.45 0.032

3 0.50 0.70 -0.61 0.033

4 0.75 0.62 -0.52 0.038

5 0.75 0.54 -0.43 0.041

6 0.75 0.71 -0.59 0.039

7 1.00 0.57 -0.48 0.040

8 1.00 0.62 -0.52 0.042

9 1.00 0.75 -0.64 0.043

10 1.25 0.59 -0.49 0.045

F)

The best-fit line represents the relationship between the impulse applied to the cart by the bumper and the cart's change in velocity during the collision with the bumper. The impulse is equal to the change in momentum, which can be calculated as:

Impulse = (Mass of Cart) x (Change in Velocity)

We can plot the impulse on the x-axis and the change in velocity on the y-axis, and the slope of the best-fit line will be equal to the mass of the cart.

Here is the graph:

The equation of the best-fit line is:

y = -1.054x + 0.052

where y represents the change in velocity (in m/s) and x represents the impulse (in Ns).

The slope of the best-fit line is -1.054, which represents the mass of the cart in kilograms. Therefore, the experimental value for the mass of the cart is:

Mass of Cart = -slope = -(-1.054) = 1.054 kg

G)

The principle used to calculate the mass of the cart is based on the conservation of momentum. During the collision, the impulse applied to the cart by the bumper is equal to the change in momentum of the cart. By plotting the impulse and the change in velocity on a graph, we can find the slope of the best-fit line, which is equal to the mass of the cart.

The minimum current through R1 will be 10mA.

Using Ohm's Law (V = IR), we can find the minimum current through R1 as follows:

Vr1 = Vz5 + Vz6

where Vr1 is the voltage across resistor R1.

Therefore, the minimum current through R1 is:

Ir1 = Vr1 / R1

Assuming that R1 is a standard value resistor (e.g., 1kΩ), and the Zener voltages are each 5V, the voltage across R1 will be:

Vr1 = Vz5 + Vz6 = 5V + 5V = 10V

Therefore, the minimum current through R1 will be:

Ir1 = Vr1 / R1 = 10V / 1kΩ = 10mA

Current is the flow of electric charge through a conductor or material. It is defined as the rate of flow of electric charge, measured in units of amperes (A). One ampere is equivalent to the flow of one coulomb of electric charge per second.

Electric current is caused by the movement of charged particles, typically electrons, in a circuit. When a voltage is applied to a conductor, it creates an electric field that causes electrons to move through the conductor. This flow of electrons constitutes an electric current.

The direction of electric current is defined as the direction of flow of positive charges, even though the actual charges that move are electrons, which are negatively charged. Electric current can be direct current (DC), where the flow of charge is in one direction, or alternating current (AC), where the direction of flow periodically changes.

To learn more about Current visit here:

brainly.com/question/23323183

#SPJ4

Answer:

Explanation:

Work done on the lever ( input energy ) = force applied x input distance

= 24 N x 2m = 48 J

Work done by the lever ( output energy ) = load x output distance

= 72 N x 0.5m = 36 J

efficiency = output energy / input energy

= 36 J  / 48 J

= 3 / 4 = .75

In percentage terms efficiency = 75 % .