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A block of mass M2 = 5.0kg on a rough inclined surface is connected to a ball of mass M1 by a cord over a pulley. The coefficient of static and kinetic friction between the block and the surface are ustatic = .25 and u kintec = .15. The angle between the incline and the horizontal is 30 degrees. What should the mass of M1 be to make M2 start to move?
A 56 turn rectangular coil of dimensions 5.00 cm multiplied by 10.0cm is allowed to fall from a position where B =0 to a new position where B = 0.440 T and the magnetic field is directed perpendicular to the plane of the coil. Compute the magnitude o..
An atom in a metastable state has a lifetime of 6.20 ms. What is the uncertainty in energy of the metastable state
A student ate a Thanksgiving dinner that totaled 3000Cal . He wants to use up all that energy by lifting a 30-kg mass a distance of 1.0 m. How many times must he lift the mass
A mole of atoms is 6.02 x 1023 atoms. The masses of a hydrogen atom, an oxygen atom, and a carbon atom are 1.0 u, 16 u, and 12 u, respectively. how many moles of atoms are in an 8 kg domestic cat
you need to make a series ac circuit having a resonance angular frequency of 1525 rads using a 138 ohm resistor a 10.5
A 71kg baseball player jumps straight up to catch a line drive. What is his speed immediately after stopping the ball
a particle of charge q is fixed at the origin of an xy coordinate system. at t 0 a particle m 0.934 g q 3.72 microc
A proton moves through a magnetic field at 36.9% of the speed of light. At a location where the field has a magnitude of 0.00629 T and the proton\'s velocity makes an angle of 141° with the field, what is the magnitude of the magnetic force acting on..
The flywheel of a steam engine runs with a constant angular velocity of 150 rev/min. When the steam is shut off, the friction of the bearings and of the air stops the wheel in 2.2 h.
Find the cost to operate one such string 24.0 h per day for the Christmas season (two weeks), using the rate $0.13/kWh
Two carts A and B of equal mass mA = mB = 0.622 kg are on an air track. Cart A is moving with speed vi = 0.95 m/s towards cart B which is at rest. What is the work done by non-conservative forces
two carpenters are hammering at the same time each at a different hammering frequency. the hammering frequency is the
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