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A cup of water is heated with a heating coil that delivers 117.85 W of heat. In one minute, the temperature of the water rises by 29.47 C. What is the mass in grams of the water?
The rms current in a copy machine is 5.26 A, and the resistance of the machine is 19.7?. find the peak power delivered to the machine
two particles, each with mass m = 0.95 kg, are fastened to each other, and to a rotation axis at O, by two thin rods, each with length d = 5.8 cm and mass M = 1.4 kg. what is the combination's kinetic energy
A hockey puck is struck with a force of 40N in an ice hockey arena. Assuming the ice provides a constant frictional force of 20N, determine the mass of the puck
A block of mass of 4kg is dragged 2m along a horizontal surface by a force F=30N acting on a 53 degree to the horizontal. Find change in kinetic energy of the block
A bullet hit a block of wood with a mass of 10 kg, traveling horizontally at 300 m/s. What is the recoil velocity of the block
A student begins at rest and then walks north with an average speed of v1=0.85 m/s. What was the student's overall average velocity, in m/s, for the trip assuming the student spent equal times at speeds v1 and v2
A ball rolling on a table has a velocity with rectangular components vx = 0.50m/s and vy = 0.60m/s. What is the direction of the balls displacement
Electromagnetic waves propagate through what? What is oscillating? What determines the velocity c in free space
ou place it in water and it displaces a volume of 20 cubic centimeters of water. What is the hardness of this mineral? describe your answer.
What is an acceleration of the particle at the instant
a rock is tossed off the top of a cliff of height 34.5m. its initial speed is 29.1m/s and the launch angle is 30.2degrees with respect to the horizontal. what is the speed with which the rock hits the ground
A cyclist rides a bike at 12.0 miles/hour. The diameter of the wheels is 70.0cm. (a) Through how many turns do the wheels spin for the 12.0mile trip, what is the bikes angular acceleration
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