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A billiard ball moving at 5 m/s strikes a stationary ball of the same mass. After the collision, the first ball moves at 4.33 m/s at an angle of 30 degrees with respect to the original line of motion. Assuming an elastic collision (and ignoring friction and rotational motion), find the struck ball's velocity (magnitude and direction) after the collision.
A woman walks 300m in the direction 30° east of north, then 300 m directly east.
How far from a point on the floor directly below the edge. Why is it a good idea to have your hand extended forward when you are getting ready to catch the fast moving baseball with your bare hand.
A cord of length 1.0m is fixed at both ends. Its mass per unit length is 1.2g/m and the tension is 11N. What is the frequency of fundamental oscillation
Consider the following two-step process. Heat is allowed to flow out of an ideal gas at constant volume so that its pressure drops from P1 = 2.5atm to P2 = 1.3atm, Calculate the total heat flow into or out of the gas
What is the beat frequency in Hz. A force of magnitude P pushes the block forward and downward as shown in the figure below. suppose the force is applied at an angle of 24.0° below the horizontal.
On a cold day, 25000 J of heat leaks out of a house. The inside temperature is 22 °C, What is the increase in the entropy of the universe that this heat loss produces
The ceiling is of height 3.5 m, and the balloons are launched at a velocity of 10 m/s. The acceleration of gravity is 9.8 m/s2. Evaluate at what angle must they be launched to just graze the ceiling?
A particle with a charge of q = -5.00 nC is moving in the uniform magnetic field of vec{B}=( -1.20 T ) hat{z}. The magnetic force on the particle is measured to be vec{F}= ( -7.60×10-7 N )hat{y}.
suppose that E = 50.0V , R = 210? and L = 0.140H . With switch S2 open, switch S1 is left closed until a constant current is established. Which point is at a higher potential
A parallel combination of an 10 resistor and an unknown resistor R is connected in series with a 13 resistor and a battery. What is the unknown resistance R
The electron and proton of a hydrogen atom are separated (on the average) by a distance of approximately 5.3 x 10-11 m, what is a fundamental difference between the two forces
The potential at the center of a uniformly charged ring is 52 kV, and 15 cm together the ring axis the potential is 41 kV. Find the ring's radius and its total charge.
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