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-A 150 g baseball is thrown toward home plate with a speed of 40.0 m/s. The batter hits the ball directly back at the pitcher with a speed of 50.0 m/s. What is the change in momentum of the ball? Round to the nearest tenth and include units.
-A 23g bullet travelling at 230m/s penetrates a 2.0kg block of wood and emerges cleanly out the other side traveling 170m/s. If the block is stationary on a frictioness surface, how fast does it move after the collision? Round to one decimal place and include units.
-What is the impulse when a test car traveling at 15 m/s strikes a cement wall at a force of 1,900,000 N if the impact lasts for 0.005 seconds? Round to the nearest whole number and include units.
-A 3 kg cart moves at 4 m/s. A 2 kg cart moves at 6 m/s. Which has greater magnitude of momentum?
a. The 2 kg cart because it is moving faster
b. The 3 kg cart because it has more mass
c. The momentum is the same
d. It depends on the direction each cart is moving
A block of mass 2.0 kg oscillates on a spring with spring constant k= 5 N/M. what is the period of oscillation is rad/s?, what is the new period of oscillation
The drawing shows two boxes resting on frictionless ramps. One boxis relatively light and sits on a steep ramp. The other box isheavier and rests on a ramp that is less steep. The boxes arereleased from rest at A and allowed to slide down the ramp..
Particle X has a speed of 0.750c and a momentum of 5.78E-19kg*m/s. What is the total energy of the particle
A rectangular pipe carries water over a horizontal distance of 10m. At what speed does water enter the pipe
Calculate the power required by an object to lift another object
A 6.3 µC point charge and a -1.7 µC point charge are separated by a distance of 0.00034 m. What is the electric potential energy of this system?
A Michelson interferometer has this glass rod in one arm, and the rod is being heated so that its temperature increases at a rate of 5.00Co/min. The light source has wavelength is = 589 nm, and the rod iuitially is at T = 20.0oC. How many fringes ..
Determine the magnitudes of the currents in each resistor shown in the figure (Figure 1) . The batteries have emfs of E1=9.0V and E2=12.0Vand the resistors have values of R1=26Ω, R2=10Ω, and R3=39Ω.
A 260 wooden raft floats on a lake. When an 80 man stands on the raft, it sinks 5.0 deeper into the water. When he steps off, the raft vibrates for a while. What is the frequency of vibration.
the electric field midway between two equal but opposite point charges is 747 nc and the distance between the charges
Why must the strong nuclear force be stronger than the electromagnetic force at short distances?
An object starts from rest at t= 2 s at an initial position of x = 7.2 m and moves with constant acceleration. What is the magnitude of the acceleration of the object
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