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A 20 kg block is pulled across a horizontal surface by a rope. The block has an acceleration of 2.3 m/s2 and the coefficient of kinetic friction is 0.16. Decide the tension in the rope.
A photoelectric-effect experiment finds a stopping potential of 1.93 V when light of 200 nm is used to illuminate the cathode, From what metal is the cathode made
A force, F(vector) =(2xˆ+3yˆ) N, is applied to an object at a point whose position vector with respect to the pivot point is r(vector) =(4xˆ+4yˆ+4zˆ) m
Gas is confined in a tank at a pressure of 12.3 atm and a temperature of 29.5°C. If two-thirds of the gas is withdrawn and the temperature is raised to 90.0°C, what is the pressure of the gas remaining in the tank?
the drawing shows an electron entering the lower left side of a parallel plate capacitor and exiting at the upper right
A metal block of mass m slides on a horizontal surface that has been lubricated with a heavy oil so that the block suffers a viscous resistance that varies as the 3/2 power of the speed F(v)=-cv^3/2. If the initial speed of the block is v0 at x=0,..
You have a concave lens whose focal length has an absolute value of 8 cm and several convex lenses with f=5.0 cm, 12 cm, 15 cm, and 20 cm. determine the focal length of the concave lens
5 moles of an ideal gas, initially at P=105 Pa and V=3m3, expand adiabatically until the volume is doubled, How much work was done in the adiabatic step
a modern house is wired for 115 V, and the current is limited by circuit breakers to a maximum of 135 A. find the maximum electrical power the house can consume
A mass M = 95.0 kg is suspended by a massless string from the ceiling of a van which is moving with constant acceleration a, what is the acceleration a of the van
Two lightbulbs operate on the same potential difference. Bulb A has four times the power output of bulb B. What is the ratio of the current in bulb A to the current in bulb B?
q1. a test rocket is launched by accelerating it along a 200.0-rm m incline at 1.57 rm ms2 starting from rest at point
A flywheel of mass 182 kg has an effective radius of 0.61 m (assume the mass is concentrated along a circumference located at the effective radius of the flywheel). What is the applied torque on the flywheel
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