Homework due Jun 8, 2022 00:00 PDT There is a section on the given problem that needs some attention, regarding the reaction time of a distracted driver. Even though a reasonable interpretation is needed to solve the problem, calculating the reaction time is not directly related to 1D kinematics and can be thus classified as a building block of a physics model (step 3). You test your reaction time with an online computer program and find that your eye-hand reaction time that is usually between 0.2-0.3 seconds doubles when you talk on your cellphone. Your friend, a medical student, tells you that eye-hand and eye-foot reaction times are different and that the eye-foot reaction time is actually 60% longer due to the longer distance from the brain to the foot. Experiments have found that you need an additional second to make a decision to react in unforeseen situations. Reaction Time Calculation 0/1 point (graded) From the information obtained by the online reaction time test and your medical student friend, calculate what would be the reaction time for the alert (un-distracted) driver. Give your answer in seconds. | Hint: Do not forget to add a second to the reaction time because of "spontaneous" reaction. Next Hint ? Hint (1 of 1): First calculate the eye-foot reaction time and don't forget to consider spontaneous reaction time.

Answer:

The ones that are after the light that went out are also out.

Explanation:

Answer:

they all go out

Explanation:

they are wired together so they all go out. i am an electrician.

266 m distance will be covered by a car uniformly accelerating from 12m/s to 26m/s in 14 seconds.

Uniform acceleration: If a body is travelling by increasing its velocity in equal intervals of time then that body is said to be in uniform acceleration.

s=ut+1/2 at² where as s= distance , u = initial velocity, t= time

to calculate the uniform acceleration a=\(\frac{v-u}{t}\) here v= final velocity u= initial velocity.

we have v=26ms and u=12m/s

a=\(\frac{26-12}{14}\) = 1 a=m/s².

now substitute a =1 in formula s=ut+1/2 at²

we get s=12(14)+1/2(1)(14)²= 266m

 Hence the distance covered by the  car which is uniformly accelerating from 12m/s to 26m/s in 14 seconds is 266 m.

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The speed of the rocket alpha when observed from rocket bravo is 1.42c.

The rocket alpha is moving with a speed of 0.90c and the rocket named bravo is travelling with a speed of 0.52c.

Both the rockets are moving with a same line towards a head on collision.

Both the speed of the rocket is observed from the frame of earth,

when the frame of reference is the rocket bravo,

So, the rocket bravo is moving itself and the rocket alpha will appear towards it with a greater velocity.

So, if V₁ is the speed of Rocket alpha and V₂ is the speed of the rocket bravo,

So, V₁₂ is the speed of rocket alpha from rocket bravo,

V₁₂ = 0.52-(-0.90)

V₁₂ = 1.42c

So, the speed of the rocket alpha from rocket bravo is 1.42c.

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Answer:

yes

Explanation:

matter can be created out of two photons (brainliest please)

The geostrophic wind describes a situation where the air moves parallel to the isobars. Therefore correct option is e.

This means that the wind is not influenced by other forces such as friction, and is instead driven solely by the pressure gradient force and the Coriolis effect. The geostrophic wind is usually stronger at higher altitudes and can be used to determine the direction of atmospheric circulation patterns. It is not related to air moving upward or downward, nor does it move particularly fast or slow compared to other winds. The direction of the geostrophic wind is determined by the pressure gradient force, with air flowing from higher to lower pressure areas.

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Answer:

Kinetic Energy

Explanation:

The statement is true, when the switch is closed electrons will flow.

Current can be defined as the rate of flow of charges or electrons in a given circuit.

Q = It

I = Q/t

where

A closed circuit is a type of circuit in which the wire connection of the circuit is complete and in which current flows.

Switch can be used close or open a circuit.

Thus, the statement is true, when the switch is closed electrons will flow.

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Answer: 60cm^3

Explanation:

Here we can use the relationship:

Density = mass/volume.

We know that density = 5g/cm^3 and mass = 50g, then we have:

5g/cm^3 = 50g/V

V = 50g/5g/cm^3 = 10cm^3

Then, when we introduce it in a cylinder with 50cm^3 of water, this is heavier than water (the density of the water is 1g/cm^3) it will sink, and the complete volume will be equal to the volume of the water plus the volume of the object:

Total Volume = 50cm^3 + 10cm^3 = 60cm^3

According to the theory of multifactorial causation in drug effects, a drug's effects are influenced by dosage, the user's individual characteristics, and past experiences.

Dosage forms, sometimes also referred to as unit doses, are pharmaceutical drug products in the form in which they are marketed for use, with a particular combination of active ingredients and inactive ingredients (excipients), in a particular configuration (such as a capsule shell, for example), and apportioned into a specific dose. If two items are both amoxicillin, for instance, one comes in 500 mg capsules and the other in 250 mg chewable tablets. When each drug product is separately packaged, the term "unit dose" can also occasionally refer to non-reusable packaging), while the FDA distinguishes between the two terms as "packaging" or "dispensing" of unit doses. Depending on the situation, the term "multiple-unit dosage" might apply to various drug products packaged together or to a single drug product containing multiple pharmaceuticals.

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A magnet still has a north pole as well as a south pole even if it is broken into two pieces. The magnet will always have both a north pole as well as a south pole, regardless of how small it is.

Any object that creates a magnetic field of its own and interacts with some other magnetic fields is a magnet. The north pole and the south pole are the two poles of a magnet. Field lines that begin at the north pole but instead end there at south pole of a magnet are used to show the magnetic field.

Iron, chromium, or cobalt are the main metals found in permanent magnets. An alloy called Alnico is created from aluminium, nickel, and cobalt.

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The heaviest elements not appreciably larger than the lightest elements are the transition metals. These metals include elements like iron, copper, and gold. Although they are heavier than the lightest elements like hydrogen and helium, their size is not significantly larger.

This is because the size of an atom is determined by the number of protons in its nucleus and the number of electrons in its outermost shell. While the transition metals have more protons than the lightest elements, their outermost shells are also more tightly bound to the nucleus, making their size relatively small.

The size of an atom is also affected by the electron configuration, which determines the size of the electron cloud. The transition metals have a relatively stable electron configuration, which contributes to their small size. Additionally, the presence of multiple energy levels in the electron cloud of the transition metals means that they can have a range of sizes, with some being slightly larger than others.

In summary, the heaviest elements not appreciably larger than the lightest elements are the transition metals, which have a relatively small size due to the number of protons in their nucleus, the stability of their electron configuration, and the presence of multiple energy levels in their electron cloud.

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The buoyant force experienced by an object fully submerged in a fluid is given by the formula:

where Fb is the buoyant force, p is the density of the fluid, g is the acceleration due to gravity, and V is the volume of the object.

If you are given the volume and density of the ball and the density of the water, you can use this formula to calculate the buoyant force experienced by the ball. Simply plug in the appropriate values for p (the density of the water), g (the acceleration due to gravity, which is approximately 9.81 m/s^2 on Earth), and V (the volume of the ball).

It's important to note that this formula only applies to objects that are fully submerged in the fluid. If the object is partially submerged, the buoyant force will be less than what is calculated using this formula. In this case, you would need to take into account the volume of the object that is submerged in the fluid in order to calculate the buoyant force accurately.

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Answer:1.16

2.unbalanced

Explanation:

Answer:

What is the net force on them?  

⇒ 16  N

Is this force balanced or unbalanced?  

⇒ unbalanced

Will the dog move forward, backward, or remain stationary?  

⇒ forward

Explanation:

did it :)

Answer:

So, the frequency of the sine wave is 25 Hz

Explanation:

The main answer is: The cheese will cause the spring to compress due to its weight.

When the cheese is placed on the vertical spring, it exerts a downward force due to its weight. This force causes the spring to compress. The spring constant, denoted by k, determines how much the spring will compress in response to the applied force. Since the mass of the cheese is given as 1.50 kg, the force exerted by the cheese due to its weight can be calculated using the equation F = mg, where m is the mass of the cheese and g is the acceleration due to gravity. This downward force causes the spring to compress, resulting in a change in the length of the spring from its equilibrium position. The specific amount of compression can be determined by the relationship between the force constant of the spring and the applied force.

In order to fully analyze the system, additional information is required, such as the value of the spring constant k. The spring constant represents the stiffness of the spring and determines how much force is needed to produce a given displacement or compression in the spring. Once the value of the spring constant is known, Hooke's Law can be applied to calculate the amount of compression in the spring. Hooke's Law states that the force exerted by a spring is directly proportional to the displacement or compression of the spring from its equilibrium position. Mathematically, this can be expressed as F = -kx, where F is the force exerted by the spring, k is the spring constant, and x is the displacement or compression of the spring. By rearranging the equation, the compression of the spring, denoted by x, can be calculated as x = -F/k. Therefore, with the value of the downward force exerted by the cheese and the spring constant, the compression of the spring can be determined.

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If the amplitude of a simple harmonic oscillator (spring plus mass) is doubled, then there is no change in the period of the oscillation.

Simple harmonic motion can be defined as any motion having the restoring force directly proportional to the displacement and the time period of a simple pendulum is defined as the time taken by the pendulum to finish one full oscillation and is denoted by “T”. The period of oscillation is-

T=2π√m/k

where m=mass of the body

k= spring constant

As time period is independent of amplitude of SHM it remains same, so there's no change in the period of oscillation.

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Answer:

The fourth one

Explanation:

It's the only one to represent volume (cm³ vs. m³) and have kilograms in the denominator.

Have a wonderful weekend!

If we want to convert the density of the silicon from  2.33 gram/ centimeter3 to kilogram /meter3 unit we have to perform the operation

(1 kilogram/ 10³ grams) ×(1 centimeter/10⁻² meters)×(1 centimeter/10⁻² meters)×(1 centimeter/10⁻² meters)

Therefore the correct answer is option B.

It can be defined as the mass of any object or body per unit volume of the particular object or body. Generally, it is expressed as in gram per cm³ or kilogram per meter³.

As given in the problem we have to convert the density of the silicon from  2.33 gram/ centimeter3 to kilogram /meter3 unit

1 kilograms = 1000 grams

1 meter = 100 cm

2.33 gram/ centimeter3 = 2.33×10 ⁻³kilogram / 10 ⁻⁶meter3 unit

                                       = 2.33×10³kilogram / 10 ⁻⁶meter3 unit

Thus, the correct answer is option B.

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The temperature of a volume of air is 0 degrees Celsius. The temperature of an equivalent volume of air that is twice as hot is (D) 273 degrees C.

This is due to the fact that the absolute temperature scale, or 273.15 Kelvin (K), converts 0 degrees Celsius to K. The temperature of an identical volume of air would be twice as hot as the air at 0 degrees Celsius, or 2 times 273.15 K, or 546.3 K.

However, we must deduct 273.15 from the Kelvin temperature in order to convert this temperature back to degrees Celsius. This is so because the Celsius scale is based on the 273.15 K and 373.15 K freezing and boiling temperatures of water, respectively.

The temperature is 273.15 degrees Celsius, which is the same as the freezing point of water in Celsius, when we subtract 273.15 from 546.3 K. Consequently, 273 degrees Celsius is the right response.

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Answer:

The DNA molecule is a polymer of nucleotides. Each nucleotide is composed of a nitrogenous base, a five-person sugar (deoxyribose), and a phosphate group There are four nitrogenous bases in DNA, two purines (adenine and guanine) and two pyrimidines (cytosine and thymine). A DNA molecule is composed of two strands.

Answer:

C

Explanation:

A ball is thrown at an angle of 45° to the ground.the initial speed of the ball was approximately 589 m/s.

To solve this problem, we need to use the kinematic equations of motion for projectile motion. We know the angle and the distance, so we can find the initial speed of the ball. Here's how:
First, we need to break down the initial velocity of the ball into its horizontal and vertical components. We know that the angle of the throw is 45°, which means that the initial velocity is equally divided into horizontal and vertical components. Therefore, the horizontal component of the velocity (vx) is equal to the vertical component of the velocity (vy).
Next, we can use the kinematic equation for the horizontal motion of the ball:
distance = velocity x time
Since there is no acceleration in the horizontal direction, we can use the distance traveled by the ball (86m) and the horizontal component of the velocity (vx) to find the time it takes for the ball to travel that distance:
86m = vx x t
t = 86m / vx
Now, we can use the kinematic equation for the vertical motion of the ball:
distance = (initial velocity x time) + (0.5 x acceleration x\(Time^{2}\))
We know that the distance traveled vertically is zero (since the ball lands at the same height as it was thrown), the initial vertical velocity (vy) is equal to the initial speed (v0) multiplied by the sine of the angle, and the acceleration is -9.8 m/\(s^{2}\) (since gravity is pulling the ball downwards). Substituting these values, we get:
0m = (v0 x sin45° x t) + (0.5 x -9.8 m/\(s^{2}\) x \(t^{2}\))
Simplifying this equation, we get:
0m = v0 x t x 0.707 - 4.9m/\(s^{2}\) x \(t^{2}\)
Now, we can substitute the expression we found for time in the first equation into this equation to get:
0m = v0 x (86m / vx) x 0.707 - 4.9m/\(s^{2}\) x \((86m/vx)^{2}\)
Simplifying this equation, we get:
0m = 61.01m/s x v0 / vx - 4.9m/\(s^{2}\) x 74.76/\(s^{2}\)
Multiplying both sides by vx, we get:
0m = 61.01m/s x v0 - 35977.52m
Solving for v0, we get:
v0 = 35977.52m / 61.01m/s ≈ 589m/s
Therefore, the initial speed of the ball was approximately 589 m/s.

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Answer:

The acceleration time graph is the graph that is used to determine the change in velocity in the given interval of the time. ... The acceleration time graph is used to find the change in the velocity of the moving object for the given period of time and this can be determined by finding the area under the curve

Explanation:

Answer:

Explanation:

The distance covered by an object given it's velocity and time taken can be found by using the formula

We have

distance = 5 × 3

We have the final answer as

Hope this helps you

By keeping their centre of gravity over the beam, a gymnast may balance himself. The gymnast increases their moment of inertia, or resistance to rotational motion, by spreading their arms out to the sides, making it harder to unintentionally tilt or spin. As a result, their body is more stable, aiding in balance maintenance. Moreover, the centre of mass can be slightly adjusted with the arm movements to make up for any minor deviations from the equilibrium position. The gymnast can also orient oneself in relation to the beam using the visual clues provided by the arms. Overall, while balancing on a beam, a gymnast can gain various advantages from extending their arms to the side, including increased stability and many more.

Answer:

Biodiversity is the biological variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic, species, and ecosystem level. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity.

Answer:

Bio means life

Explanation:

Biodiversity means life on earth.

Answer: It's D

Explanation:

Using excess energy from a sunny day stored in batteries is the best option for off-the-grid PV solar systems at night.

Based on the information given, the best option for a homeowner using an off-the-grid PV solar system to power a home between 9:00 pm and 6:00 am would be to use excess energy from a sunny day stored in batteries for power. This means that the solar panels would generate excess energy during the day which would be stored in batteries to be used at night. This is common practice in off-the-grid solar systems and is an effective way to ensure consistent power supply. Switching to the electrical grid or relying on other sources of energy like wind or hydroelectricity would not be feasible for an off-the-grid solar system. Burning wood for heat and light could be an option but it would not be directly related to the solar system.

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 Here  the answer = 0.0080 .

Based on stokes law,

 v = g * D^2 *(d p - d m) / (18 V)

v = terminal velocity

D =  diameter of particle

V  =  Viscosity

dp =  density of particle

dm =  density of medium.

Here density of ball = 1.42 gm/cc

By substituting,

v = 9.81 x 9.52 x 10^-3 ^2 (1420 - 1300) / 18 x 1.0

=5.92x10^-4

 v(t) =0 .99 x Vtrm

  =0 .99 x  0.0059

  = 0.00059 m/s

  v(t)/Vterm =1-e^(-t/r)

  0.99 = 1 - e ^ (-t / 9.52 x 10^-3)

  e ^ (-t / 9.52 x 10^-3) = 0.01

Taking log

 -t / 9.52 x 10^-3 = -4.6

  t = 0.0438 s

Then smaller ball

v = 9.81 x 2.38 x 10^-3 ^2 (1420 - 1300) / 18 x 1.0

= 0.000037 m/s

v(t) / Vterm = 1-e^(-t/r)

0.99 = 1 - e ^ (-t / 2.38 x 10^-3)

e ^ (-t / 2.38 x 10^-3) = 0.01

Taking log

-t / 2.38 x 10^-3 = -4.6

  t = 0.0109 s

Here Reynolds number is,

R= rho vd / mu

= 1420 x  0.00059 x 9.52 x 10^-3 x / 1.0

= 0.0080

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