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A 0.900 kg hammer is moving horizontally at 9.50 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board.
Calculate the duration of the impact. (s)
What was the average force exerted on the nail? N (downward)
A certain wire stretches 0.980 cm when an outward force of magnitude F is applied to each end. The similar force is applied to a wire of the same material however with tree times the diameter and with three times the length. By how much will the seco..
Suppose that the Hubble constant had a value of H = 135 km/s/Mpc. What would be the age of the universe? Billion years
A rubber ball is dropped and bounces vertically from a horizontal concrete floor. If the ball has a speed of 3.2 m/s now before striking the floor and a speed of 2.1 m/s just after bouncing, what is the average force of the floor on the ball? Suppose..
a rail gun accelerates a projectile from rest by using the magnetic force on a current-carrying wire. the wire has
A golfer wants to land a golf ball on the greenlocated 155m away horizontally but 4.0m higher. find With what velocity should the ball leave the tee
Two identical guitar strings are prepared such that they have the same length (1.91 m) and are under the same amount of tension, What is the wave propagation speed on the guitar strings
A student collects a 3.00 x 102 cm3 sample of hydrogen at 22.0 degrees C and 91.9 kPa. What volume would the hydrogen occupy at STP?
An arrow is launched vertically upward from a crossbow at 97.9 m/s. What is its average speed up to that moment
a uniform circular disk whose radius r is 50.5 cm is suspended from a point on its rim. at what radial distance r lt r
a motorcyclist who is moving along an x axis directed toward the east has an acceleration given by a 6.1 - 2.0t ms2
The body in the figure is pivoted at O, and two forces act on it as shown. If r1 = 2.65 m, r2 = 2.20 m, F1 = 4.24 N, F2 = 5.71 N, ?1 = 63.0°, and ?2 = 55.0°, what is the net torque about the pivot
Two large flat planes are separated by a distance d. the plates are connected to a battery. Write an expression for the capacitance
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