A train travels 120 km in 2 hours and 30 minutes what is the average speed

Why do solar eclipses move from west to east?

A 700700700-Newton rightward net force is being applied to a 101010-kg object. What is the magnitude of the rightward acceleration on the object (in / text{ m}//text{s}^2 m/s 2 space, m, slash, s, start superscript, 2, end superscript) ?

3. A spring loaded gun fires a bullet into a block of wood hanging from a frictionless pendulum. a. How fast was the bullet going when it left the gun? Spring: k = 5,000 N/m Bullet: m=20.0g Block of wood: m = 1.00kg b.

Suppose that a charged particle of diameter 1.00 micrometer moves with constant speed in an electric field of magnitude 1.00*105 newtons per coulomb while acted upon by a drag force of 7.25*10-11 newtons.

What is the speed of a wave yhat has a frequency of 2.0Hz

Based on how the book describes a heat pump in sec 16.3 how does a heat pump prove law of conservation of energy

When a gas in a container is squeezed to half its volume, its density?

A ballet student with her arms and a leg extended spins with an initial rotational speed of 0.90rev/s. As she draws her arms and leg in toward her body, her rotational inertia becomes 0.80 kg⋅m2 and her rotational velocity is 4.1rev/s.

The power rating of a vacuum cleaner is 0.8 kilowatts. If you use the vacuum cleaner for 2.5 hours, how much energy does it use?

Which has more gravitational potential energy - - a cliff diver at the top of the cliff or a cliff diver at the bottom of the cliff?