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A small car is pushing a larger truck that has a dead battery. The mass of the truck is twice as large as the mass of the car. At one instant of time the truck and car both have an acceleration of 3.5 m/s2. Which of the following statements is true? Defend your choice with an explanation using concepts related with Newton’s Laws.
1. The truck exerts a larger force on the car than the car exerts on the truck.
2. The car exerts a larger force on the truck than the truck exerts on the car.
3. The truck exerts a force on the car, but the car doesn’t exert a force on the truck.
4. The car exerts the same amount of force on the truck as the truck exerts on the car.
5. The car exerts a force on the truck; however the truck doesn’t exert a force on the car.
A recording engineer works in a soundproofed room that is 45 dB quieter than the outside. If the sound intensity in the room is 1.30 x10-10 W/m2, what is the intensity outside.
A 70 g bullet traveling at 250 m/s penetrates a block of ice at 0°C and comes to rest within the ice. Assuming that the temperature of the bullet does not change appreciably, how much ice is melted as a result of the collision?
A meteoroid is speeding throughout the atmosphere, travelling east at 16.80 km/s while descending at 13.60 km/s. What is its speed in km/s.
The moon has a mass of 7.36 1022 kg and moves about the earth in a circular orbit of radius 3.80 108 m with a period of 27.3 days. Find the moon's kinetic energy as observed on earth
A motorist driving a 1200-kg car on level ground accelerates from 20.0 m/s to 30.0 m/s in a time of 5.7 s. determine the average mechanical power in watts the engine must supply during this time interval
A 305 turn solenoid has a radius of 7.00 cm and a length of 24.0 cm. Find the inductance of the solenoid
In the absence of air resistance, a projectile is launched from andreturns to ground level. It follows a trajectory similar to that inthe figure below and has a range of 19 m.Suppose the launch speed is doubled, and the projectile is fired atthe same..
A vertical force F is applied to a block of mass m that lies on a floor. what happens to the magnitude of normal force on the block from the floor as magnitude F is increased from zero if force F is downward?
a flotation device is in the shape of a right cylinder with a height of 0.550 m and a face area of 4.00 m2 on top and
A photon has the same momentum as an electron moving with a speed of 1.83×105 m/s. What is the wavelength of the photon
A dielectric-filled parallel-plate capacitor has plate area = 30.0cm^2 , plate separation = 5.00mm and dielectric constant = 5.00. The capacitor is connected to a battery that creates a constant voltage = 10V.
he 5.0- block is pulled to the right with a force as shown in the figure . The coefficient of static friction between all surfaces is 0.55 and the kinetic coefficient is 0.3, illustrate what is the minimum value of needed to move the two blocks?
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