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Find the force needed to pull a mass of 10 kilogram at a constant speed up a plane inclined at an angle of 30 degree with the horizontal if the coefficient of kinetic friction is μk= 0.15.
If you know the mass of a star and a planet's radius and speed at perihelion (closest approach to the star), What is its speed and distance from the Sun at aphelion
A radar transmitter contains an LC circuit oscillating at 2.10 1010 Hz. What is the common reactance of the loop and capacitor at resonance
A 20,000-kg railroad car travels down the track at 30 m/sec and hits a second stationary railroad car of 10,000 kg. Calculate the final velocity of the cars
question light illuminates two closely spaced thin slits and produces an interference pattern on a screen behind. how
a 50.0 kg student climbs a 5.00 m long rope and stops at the top, how much work does she do
A 1200 kg ore cart is rolling at 10.8 m/s across a flat surface. A crane dumps 691 kg of ore (vertically) into the cart. How fast does the cart move after being loaded with ore
A thin disk of uniform density, mass 5kg and radius :25m, rests on a frictionless table. Find the linear and angular speed of the disk clay system
A moving particle encounters an external electric field that decreases its kinetic energy from 9520 eV to 7060 eV as the particle moves from postition A to position B. The electric potential at A is -55.0V, and the electric potential at B is +27.0 V...
Helium gas with a volume of 2.55L , under a pressure of 1.26atm and at a temperature of 44.0?C, How many grams of helium are there? The molar mass of helium is 4.00g/mol
A 410 W Carnot engine operates between constant-temperature reservoirs at 98°C and 49°C. find the rate at which energy is exhausted by the engine as heat
A copper cable (p=1.7*10^-8ohms*m) is designed to carry a current of 300A with a power loss of 2W/m. What is the required radius of this cable
an objects temperature increases and in so doing its radiation power increases by a factor of 2.00. what is the ratio
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