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The driver of a 1710 car traveling on a horizontal road at 112 suddenly applies the brakes. Due to a slippery pavement, the friction of the road on the tires of the car, which is what slows down th
The block drops 0.179 m before momentarily coming to rest, after which it moves back upward. (a) What is the spring constant of the spring? (b) Find the angular frequency of the block's vibrations.
A hollow brass cylinder is to be fitted over a steel piston. At 22°C the inside diameter of the cylinder is 99.2% of the outside diameter of the piston. To what common temperature should the tw
You are behind the butterfly, 75 cm from the mirror. What is the distance between your eye and the image of the butterfly in the mirror?
(a) How long does it take each ball to reach the floor after it rolls off the edge? (b) How far does each ball travel horizontally before hitting the floor?
A jet plane is flying at a constant altitude.At time t=1 vx=95 vy=115 . at t =29.5 vx=173 vy=41 a. For this time interval calculate the average acceleration.
A white billiard ball with mass mw = 1.32 kg is moving directly to the right with a speed of v = 2.92 m/s and collides elastically with a black billiard ball with the same mass mb = 1.32 kg that is
A 75 person sits on a 3.8 chair. Each leg of the chair makes contact with the floor in a circle that is 1.4 in diameter. Find the pressure exerted on the floor by each leg of the chair, assuming th
You are behind the butter?y, 53 cm from the mirror. What is the distance between your eye and the image of the butter?y in the mirror?
A hollow copper cylinder is to be fitted over a steel piston. At 22°C the inside diameter of the cylinder is 99.2% of the outside diameter of the piston. To what common temperature should the t
A bridge 30.0m long crosses a chasm. If the bridge is inclined at an angle of 20.00 to the horizontal, what is the difference in height of the two ends of the bridge?
A 35.0-kg child swings in a swing supported by two chains, each 3.10 m long. The tension in each chain at the lowest point is 344 N. Find the child's speed at the lowest point.
A passenger hanging onto a strap notices that an adjacent unused strap makes an angle of 13^circ to the vertical. What is the radius of the turn?
A snowmobile is originally at the point with position vector 28.1 m at 95.0° counterclockwise from the x axis, moving with velocity 4.41 m/s at 40.0°. It moves with constant acceleration 1.
A 394 kg mass is brought close to a second mass of 138 kg on a frictional surface with coefficient of friction 0.6. At what distance will the second mass be- gin to slide toward the first mass?The
What average force must this system exert on a 55-{rm Mg} jetliner that enters the arrestor bed at 33 m/s if the jet is to stop 120 m into the bed?
The terminals of a battery are connected across two different resistors in parallel. Which of the following statements are correct? (Select all that apply.)
Suppose a planet has an elliptical orbit. The speed of the planet is 30 km/s when it is at its average distance from the Sun. Which of the following is most likely to be the planet's speed when it
Estimate the kinetic energy of a comet striking the surface of the Earth. Assume the comet is roughly spherical with a diameter of 10 km, a density of 1000 kg m-3 and strikes with a speed of 30 km s
A coach is hitting pop flies to the outfielders. If the baseball (m = 145 g) stays in contact with the bat for 0.04 s and leaves the bat with a speed of 50 m/s, what is the average force acting on
Each with a charge of -0.029 C and separated by a distance of 8 m. What is the electric force that these objects exert on one another?
A mass-spring system oscillates with an amplitude of 6.00 cm. If the spring constant is 251 N/m and the mass is 495 g, determine the mechanical energy of the system.
During the entire flight, however, the plane encounters a 42.7 m/s wind from the jet stream, which blows from west to east. What is the maximum distance that the plane can travel due west and just b
A pendulum of mass 1.0kg is suspended from the roof of a car traveling on a level road. An observer of the car notices that the pendulum string makes an angle of 10 degrees with the vertical. What
A 0.45 kg piece of wood floats in water but is found to sink in alcohol (specific gravity = 0.79) in which it has an apparent mass of 0.034 kg. What is the SG of the wood?