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Q. If the two objects stick together after the collision, will they be moving to the right, to the left, or not at all? Explain your answer.
A friend is standing on a giant skateboard that is initially at rest. If you ignore frictional effects with the floor, what is the momentum of the skateboard if your friend walks to the right on the skateboard with a momentum of 150 kg.m/s? What is the momentum of the skateboard-person system?
What happens to the average speed of the molecules of a gas as it is heated?
Is a sauna at a temperature of 190 F hotter or colder than one at 85 C?
A string of 22 identical Christmas tree lights are connected in series to a 125 V source. The string dissipates 52 W. What is the comparable resistance of the light string.
A 65 kg hiker has fallen down a hole. One rescuer attaches a rope to the injured hiker and then a second rescuer pulls the injured hiker straight up out of the hole at a steady rate. How much force would the second rescuer need to exert on the rope t..
Determine the magnitude when the force on the wire
A small grinding wheel has a moment of inertia of 4.0×10-5 kg m^2. What net torque must be applied to the wheel for its angular acceleration to be 160 rad s^2.
With the battery disconnected the compass needle points to the right, in the plane of the coil. The apparatus is located near equator, where the Earth's magnetic field B Earth is horizontal, with a magnitude of 4×10-5 tesla. (Presume that B Earth ..
a) Determine the magnitude and direction of the electrostatic force acting on particle A in the figure given below due to particles B and C . The values of the charge on these particles are indicated in the figure.
The K-shell ionization energy of copper is 8979 eV. The L-shell ionization energy is 951 eV. Determine the wavelength of the Kα emission line of copper. What should be the minimum voltage be on an x-ray tube with a copper target in order to see the K..
The level of the liquid surface in the tank can be calculated. If the pressure on the gage is 20 kPa, Determine the depth d of liquid in the tank?
What are vertical and horizontal components of the ball's momentum immediately after striking the crossbar. what is an average acceleration of the ball during this time interval.
How numerous forces act on the brick
An airplane pilot wishes to fly due west. A wind of 88.0 km/h is blowing toward the south. What is the speed of plane over the ground in km/h.
Find out an average acceleration of the motorcycle
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