A force of 10N acts on a car for 3 seconds. The impulse imparted on the car is
33.3N*s
30N*s
3.33N's
0.3N's

The speed of the two birds after the collision is approximately 8.87 m/s.

To calculate the speed of the two birds after the collision, we can use the principle of conservation of momentum. According to this principle, the total momentum before the collision is equal to the total momentum after the collision.

The formula for momentum is:

\(\[ p = mv \]\)

where p is momentum, m is mass, and v is velocity.

Given:

Mass of the smaller bird (m1) = 1.41 kg

Mass of the larger bird (m2) = 6.33 kg

The velocity of the smaller bird before the collision (v1) = 19.8 m/s

The velocity of the larger bird before the collision (v2) = 5.21 m/s

Let's calculate the initial momentum (before the collision) and the final momentum (after the collision):

Initial momentum (before the collision):

\(\[ p_{\text{initial}} = m_{1}v_{1} + m_{2}v_{2} \]\)

Final momentum (after the collision):

\(\[ p_{\text{final}} = (m_{1} + m_{2})v_{\text{final}} \]\)

According to the principle of conservation of momentum, the initial momentum is equal to the final momentum:

\(\[ p_{\text{initial}} = p_{\text{final}} \]\)

Substituting the values:

\(\[ m_{1}v_{1} + m_{2}v_{2} = (m_{1} + m_{2})v_{\text{final}} \]\)

Now, let's solve for the final velocity (v_final):

\(\[ v_{\text{final}} = \frac{m_{1}v_{1} + m_{2}v_{2}}{m_{1} + m_{2}} \]\)

Substituting the given values:

\(\[ v_{\text{final}} = \frac{(1.41 \, \text{kg})(19.8 \, \text{m/s}) + (6.33 \, \text{kg})(5.21 \, \text{m/s})}{1.41 \, \text{kg} + 6.33 \, \text{kg}} \]\)

Calculating the final velocity:

\(\[ v_{\text{final}} = \frac{28.038 + 32.93793}{7.74} \approx 8.87 \, \text{m/s} \]\)

Therefore, the speed of the two birds after the collision is approximately 8.87 m/s.

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Answer:

Water waves are an example of waves that involve a combination of both longitudinal and transverse motions. As a wave travels through the waver, the particles travel in clockwise circles. The radius of the circles decreases as the depth into the water increases.

Explanation:

Answer:

i think it's 1400

Explanation:

w = Force x displacement

w = 400 x 3.5

The force applied to the ball is 11 Newtons.

To solve this problem, we need to use Newton's second law of motion, which states that the force applied to an object is equal to its mass times its acceleration:

F = m * a

Here, we are given the acceleration of the soccer ball when it is kicked by a player. The acceleration is 22 m/s² forward. We are also given the mass of the ball, which is 0.5 kg.

To find the force applied to the ball, we simply need to plug these values into the equation:

F = m * a

F = 0.5 kg * 22 m/s²

F = 11 N

Therefore, the force applied to the ball is 11 Newtons.

Note that the unit of force is Newtons (N), which is the SI unit of force. The Newton is defined as the amount of force required to give a mass of 1 kilogram an acceleration of 1 meter per second squared. In this case, the force applied to the soccer ball is 11 Newtons, which means that it is enough force to give the ball a mass of 0.5 kg an acceleration of 22 m/s² forward.

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Answer:

They extend directly toward the sheet.

Explanation:

if it helped u please mark me a brainliest :-//

Answer:

Model will be classified as a physical model since it is demonstrating a model in real life.

Explanation:

Answer:

Marshmallow answer

Explanation:

Answer:

Distance travel s = 296.8 m

Explanation:

Given:

Initial velocity u = 6.5 m/s

Constant acceleration a = 2.1 m/s²

Time T = 14 s

Find:

Distance travel s

Computation:

s = ut + (1/2)at²

s = (6.5)(14) + (1/2)(2.1)(14)²

s = 91 + 205.8

Distance travel s = 296.8 m

Answer:

It is cause by radiation that's the answer

Explanation: the heat project sun rays towards the popcorn which causes it to pop

The ground typically has a positive charge when a lightning strike occurs. This is because lightning results from the discharge of excess electrical energy between two charged regions, with one being negatively charged (the cloud) and the other positively charged.

Lightning strikes occur due to the discharge of excess electrical energy between two charged regions, typically between a negatively charged cloud and a positively charged ground.

Lightning can cause wildfires, power outages, and damage to infrastructure. It can also release nitrogen oxides into the atmosphere, which contribute to air pollution and can have negative effects on human health and the environment.

However, lightning can also provide beneficial effects by helping to replenish the ozone layer and providing nitrogen to plants.

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Answer:

Explanation:

Red light has longer waves, with wavelengths around 620 to 750 nm.

The line of evidence that is not consistent with the theory of evolution of the horse is: "The fossils of the limbs are different from each other, which indicates these organisms are not related and evolved separately from each other."

The theory of evolution suggests that organisms share a common ancestor and have evolved through gradual changes over time. Therefore, the presence of similar structures and traits among fossilized limbs is consistent with the theory, indicating that these organisms are related and evolved from a common ancestor. If the fossils of the limbs were significantly different from each other, it would suggest that these organisms evolved separately and do not share a common ancestry. However, this would contradict the theory of evolution, which states that species are connected through common ancestors and have undergone a process of gradual change.

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When the smaller piston moves in a hydraulic system, it applies a greater force compared to the larger piston.

This is because the pressure of the fluid is equal throughout the system, so the force exerted on the smaller piston is spread over a smaller area, resulting in a greater amount of pressure.

The force exerted by the fluid in a hydraulic system is directly proportional to the pressure and the area of the piston. According to Pascal's law, the pressure of a confined fluid is transmitted equally in all directions. Therefore, the pressure acting on the smaller piston is the same as the pressure acting on the larger piston.

However, since the area of the smaller piston is smaller than that of the larger piston, the force exerted on the smaller piston is greater. This is because the pressure is spread over a smaller area, resulting in a higher amount of force. In other words, the force applied by the smaller piston is equal to the force applied by the larger piston, but it is concentrated over a smaller area, resulting in a greater pressure and force.

In a hydraulic system, the fluid applies pressure uniformly throughout the system. According to Pascal's Principle, the pressure applied to one part of the fluid is transmitted equally to all parts of the fluid. As a result, the force exerted by the fluid on the pistons is determined by the product of pressure and the piston's area (F = P × A).

Since the smaller piston has a smaller area, it generates less force compared to the larger piston. However, as the fluid moves through the system and the pistons are connected, the work done on both pistons remains the same (W = F ×d). Due to the smaller force exerted on the smaller piston, it needs to move a greater distance to maintain the same amount of work as the larger piston.

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The observation of redshift in quasar spectra was a crucial observation in astronomy that helped astronomers in figuring out what quasars really were.

When astronomers observed the spectra of quasars, they found that their spectral lines were significantly redshifted. This observation indicated that quasars were extremely distant objects moving away from us at high speeds. The degree of redshift provided valuable information about the cosmological distance to quasars and the expansion of the universe. By combining the observed redshift with other data and theoretical models, astronomers were able to deduce that quasars were incredibly luminous objects located at cosmological distances. They are now understood to be powered by the accretion of mass onto supermassive black holes at the centers of galaxies.

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During a radiation inversion, wind machines can lift cool surface air to higher altitudes. This statement is True.

Radiation inversion is a meteorological phenomenon that occurs when the temperature of the Earth's surface and the air near the surface is lower than the temperature of the air above it. During a radiation inversion, warm air in the atmosphere, which is less dense, rises and cools as it ascends into the cooler air mass above.In the atmosphere, wind is created when cool, dense air at higher altitudes falls to the surface, displacing warmer air. During a radiation inversion, wind machines can lift cool surface air to higher altitudes, disrupting the inversion layer by mixing it with warmer air from above.

Wind machines, which are devices that propel air using blades or fans, can lift cool surface air to higher altitudes. This method aids in the prevention of frost damage by mixing warmer air from higher altitudes with the colder air near the surface. Wind machines are frequently utilized in fruit and crop production to assist in the prevention of frost damage. To summarize, during a radiation inversion, wind machines can lift cool surface air to higher altitudes to prevent frost damage by mixing it with warmer air from above.

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The ratio of the height attended by the object thrown upward to that thrown at some angle θ with the vertical is 1.  

Note: It is assumed that the mass of the first object is m and the mass of the second object is 2m. Also, the first object is thrown upward and the second object is thrown at some angle θ with the vertical.

Projectile motion: Any object that is thrown in the air is called a projectile and the motion described by it under gravity is called the projectile motion.  

If the air resistance is neglected, then the acceleration due to gravity g is the same for all objects irrespective of their masses. It is given that both objects remain in the air for the same time period. So first calculate the time period for the objects when they are in the air.

Time period of the first object: The first object is thrown in the air upwards so from the second kinematics equation,

h1=u1*t1-(1/2)*gt1^2

where h1 is the height, t1 is the time, and u1 is the initial velocity for the first object.

When the object is not in air h1=0, so

0=u1*t1-(1/2)*gt1^2

After solving the above quadratic equation, the values of t1 obtained are t1=0 which represents the initial time, and t1=2u1/g which represents the time period. So the time period of the first object is,

t1=2u1/g

Time period of the second object: The second object is thrown at some angle θ with the vertical as shown in the diagram. From the diagram, the initial velocity along the vertical direction is,

u2=uocos(θ)

where uo is the initial velocity and u2 is the initial velocity along the vertical direction.

From the second kinematic equation,

h2=u2*t2-(1/2)*gt2^2

where h2 is the height, t2 is the time, and u2 is the initial velocity for the second object along the vertical direction.

When the object is not in air h2=0, so using u2=uocos(θ),

0=uocos(θ)*t2-(1/2)*gt2^2

After solving the above quadratic equation, the values of t2 obtained are t2=0 which represents initial time, and t2=2uocos(θ)/g which represents  the time period. So the time period of the second object is,

t2=2uocos(θ)/g

Given that the time period is the same for both cases,

t1=t2

2u1/g=2uocos(θ)/g

u1=uo cos(θ)

Calculation of the ratio of the height of the object:

The maximum height is attained when the time of the object in the air is half of the total time period. At maximum height, velocity is zero.

From the third equation of motion.

v^2=u^2-2gh

h=u^2/2g

where h is the height and u is the initial velocity of an object.

Using it and u1=uo cos(θ) and u2=uo cos(θ), the ratio of h1 and h2 is,

h1/h2=  u1^2/2g÷u2^2/2g

h1/h2=(uo cos(θ))^2/(uo cos(θ))^2

h1/h2=1

The ratio of their height will be 1.

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Answer:

25N

Explanation:

if you calculate it right the answer will be 25

The value of resistor R that gives the circuit in the figure a time constant of 22 μs is 220 Ω.

The circuit that is in the figure is shown below:Given that time constant (RC) = 22 μs. To find the value of resistor R, we need to use the formula for the time constant:

RC = τ, where R is the resistance and C is the capacitance of the circuit.

Rearranging the above formula, we get:R = τ / C

Where τ is the time constant and C is the capacitance of the circuit.

From the figure, the capacitance is given as 0.1 μF

.Substituting the values of τ and C in the above formula, we get:

R = (22 × 10⁻⁶ s) / (0.1 × 10⁻⁶ F)

R = 220 Ω

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Gravitational Potential Energy

m: mass

g: gravity

h: height

m: kilogram

g: m/s^2

h: meters

Mode of transportation is the slowest, most difficult to access, and limited in terms of products it can carry, though it offers the most reliable service (E). rail is the correct option.

In general, rail transportation takes longer than other types of transportation including vehicles, pipelines, watercraft (like ships), and aero planes. Railways often follow set routes and schedules, which, depending on the rail infrastructure present, may restrict their accessibility in some locations. The kinds and quantities of goods that can be transported by rail may also be constrained since railcars have certain size and capacity restrictions.

However, compared to other forms of transportation, rail travel is renowned for its dependability because trains often run on set timetables and are less impacted by bad weather or heavy traffic.

Therefore, the correct option is (E).

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In a pipe system with a 45° reducing bend, the force exerted by water on the bend is found to be 39178 N, acting horizontally to the right. The velocities at the inlet and outlet sections are calculated to be 3.18 m/s and 12.73 m/s respectively, while the pressures at these sections are determined to be 200 Kpa and 124030 N/m². The forces in the Y-direction balance each other, resulting in a net force of zero in that direction.

Based on the given data, we are considering a pipe system with two sections: section 1 and section 2. Section 1 has a diameter of 600mm (0.6m) and a corresponding area (A1) of 0.2827m².

Section 2 has a diameter of 300mm (0.3m) and an area (A2) of 0.07068m². The discharge of water through the system is given as 0.9 m³/s.

Using the discharge and the respective areas, we can calculate the velocities at section 1 (V1) and section 2 (V2) using the formula Q/A. V1 is found to be 3.18 m/s, while V2 is calculated as 12.73 m/s.

The pressure at section 1 (P1) is specified as 200 Kpa, which is equivalent to 200000 N/m². To determine the pressure at section 2 (P2), we apply Bernoulli's equation, assuming no change in elevation (Z1 = Z2). This calculation results in P2 being approximately 124030 N/m².

To find the force exerted by the water on the reducer, we utilize the equation

∑(Force) = (Pressure1 * Area1) - (Pressure2 * Area2).

After substituting the values, we find that the force exerted by the water on the reducer is 39178 N. Additionally, it is important to note that the forces in the Y-direction balance each other out, resulting in Fy = 0.

Therefore, the force exerted by the water on the reducer is entirely in the X-direction, with a magnitude of 39178 N to the right.

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Explanation:

The purpose of cellular respiration is the to provide energy for the body of an organism. In this process, food materials are broken down by complex metabolic actions usually with the availability of oxygen. Then, energy is liberated for use by an organism and the waste is expelled.

Cellular respiration and photosynthesis are both similar. In that they are ways by which organisms obtain nutrition. The food for plant is derived by the process of photosynthesis. Also, other organisms use this food for their own nourishment.

Using the concepts of momentum, we got  that 13m/sec is the velocity of the ball after 2 sec if the distance the ball has rolled after t seconds is given by s(t) = 5t + 2t2 equation.

Velocity is defined as the derivative of displacement with respect to time

v= ds/dt

The given equation of distance is

s(t) = 5t + 2t²  : distance that the ball has rolled after t seconds

v= 4 m/s : initial velocity

t= 2 s

Problem development

s(t) = 5t + 2t²

Using differentiability

v= ds/dt= 5 + 4t : velocity of the ball in function of the time

We replace t =2 s in the equation of velocity

v= 5 + 4(2)

=>v=5+8

=>v=13m/sec.

Hence, if a ball is given a push so that it has an initial velocity of 4 m/s down a certain inclined plane, and  the distance it has rolled after t seconds is given by the following equation s(t) = 5t + 2t2,then the velocity of the ball after 2 sec is 13m/sec.

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(Complete question) is:

If a ball is given a push so that it has an initial velocity of 4 m/s down a certain inclined plane, then the distance it has rolled after t seconds is given by the following equation. s(t) = 5t + 2t2 . Find the velocity after 2 seconds.

Answer: CO

I hope this helps

Answer:

co

Explanation:

Answer:

the resistance of the copper wire 20 meters long and with a diameter of 0.05 cm is 0.342 ohms.

Explanation:

To calculate the resistance of the copper wire, we need to use the formula:

R = (ρ * L) / A

where R is the resistance of the wire, ρ is the resistivity of copper, L is the length of the wire, and A is the cross-sectional area of the wire.

The resistivity of copper is 1.68 × 10^-8 Ω·m.

First, we need to calculate the cross-sectional area of the wire:

A = π * (d/2)^2

A = π * (0.05cm/2)^2

A = 0.0019635 cm^2

Note that we converted the diameter from centimeters to meters, since the resistivity is given in ohms per meter.

Now, we can calculate the resistance of the wire:

R = (ρ * L) / A

R = (1.68 × 10^-8 Ω·m * 20m) / 0.0019635 cm^2

R = 0.342 Ω

Therefore, the resistance of the copper wire 20 meters long and with a diameter of 0.05 cm is 0.342 ohms.

Answer:

An earthquake is a sudden shaking movement of the surface of the earth. It is known as a quake, tremblor or tremor. Earthquakes can range in size from those that are so weak that they cannot be felt to those violent enough to toss people around and destroy whole cities. ... An earthquake is measured on Richter's scale.

A(n) active solar system makes use of a secondary medium, such as water, to collect and convey the energy of the sun. Like passive systems, these are often used for heating buildings.

Active solar systems actively circulate a fluid medium, typically water or a heat-transfer fluid, between solar collectors and the building or storage system using mechanical equipment like pumps or fans. The fluid is circulated to provide room heating, water heating, or other heating applications once the solar collectors transfer the energy from the sun to it.

Active solar systems are those that employ solar collectors to heat water that is then circulated via pipes to produce hot water for residential usage or space heating. These systems can be used to heat buildings.

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Answer:

there are 235cm in 2.35m

Answer:

(Gravity)is very important to us. We could not live on Earth without it. The sun's gravity keeps Earth in orbit around it, keeping us at a comfortable distance to enjoy the sun's light and warmth. It holds down our atmosphere and the air we need to breathe.

(Friction)can slow things down and stop stationary things from moving. In a frictionless world, more objects would be sliding about, clothes and shoes would be difficult to keep on and it would be very difficult for people or cars to get moving or change direction.Nov 14, 2018

Answer:

Football

Power

Jamm

Steady

Kick

Both the assertion and the reason given are true.If the mass of the object is less, the acceleration produced by the force will be more. Hence, the acceleration produced by the force is directly proportional to the magnitude of the force and inversely proportional to the mass of the object.

The given assertion: When astronauts throw something in space, that object would continue moving in the same direction and with the same speed; and the given reason: The acceleration of an object produced by a net applied force is directly related to the magnitude of the force, and inversely related to the mass of the object are both correct.Astronauts are capable of throwing objects in space because they are beyond Earth's gravity and do not have to deal with any significant air resistance. In the absence of other forces like friction or air resistance, the initial velocity will be conserved, and the object will continue to move with the same speed and direction. The object would continue to move in a straight line with the same speed because no external force acts on it to change the object's state of motion.Newton's second law states that the force of an object is directly proportional to its acceleration, but inversely proportional to its mass. F=ma, where F is force, m is mass, and a is acceleration. Therefore, if the mass of the object is less, the acceleration produced by the force will be more. Hence, the acceleration produced by the force is directly proportional to the magnitude of the force and inversely proportional to the mass of the object.

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