A 60 kg box is lifted by a rope a distance of 10 meters straight up at a constant speed. How much power is required to complete this task in 5 seconds?

A particle of mass M moves along a straight line with initial speed vi. A force of magnitude F pushes the particle a distance D along the direction of its motion. Part A: Find vf, the final speed of the particle after it has traveled a distance D.

What energy sources do not convert the energy of motion into electrical power

A resistor rated at 250 k Ω is connected across two D cell batteries (each 1.50 V) in series, with a total voltage of 3.00 V. The manufacturer advertises that their resistors are within 5% of the rated value.

True or false: When an object becomes polarized, it acquires a charge and becomes a charged object.

Examples of balanced forces in a room

Newtons second law of motion the acceleration of an object equals the net force acting on the object divided by the objects?

An empty train car of mass 2.0 x 104kg coasts along at 10 m/s. A 3000-kg boulder is suddenly dropped vertically into the car. Find the speed of the car immediately after the boulder is dropped in.

Measuring which physical property is most likely to produce the most precise results when trying to identify a substance? luster hardness density viscosity

How is current transferred from the moving armature to the rest of the circuit in an alternating current generator?

There are two types of waves, mechanical and electromagnetic. Microwaves, infrared, and radio was are examples of electromagnetic waves. Which statement is true about the speed of an electromagnetic wave? A) It is not affected by changes in media.