If a passenger train is travelling on a straight track with a negative velocity and a positive acceleration, is it speeding up or slowing down?

A tube with a cap on one end, but open at the other end, has a fundamental frequency of 129.5 Hz. The speed of sound is 343 m/s. (a) If the cap is removed, what is the new fundamental frequency of the tube? (b) How long is the tube?

A miniature light bulb with resistance of 3 ohms is connected to a 6-volt source. How much current will flow through the bulb?

Is it possible to walk for ten seconds at high speed and have 0 velocity? If so, provide an example. If not, explain why.

A 100 kg roller coaster car is located at the top of a hill where the height is 20 m. What is the velocity when it reaches the bottom of the hill? 5.5 m/s 11.2 m/s 16.7 m/s 19.8 m/s

A baseball pitcher throws at 95 mile/hr at a hitter 60 feet 6 inches away. How long does it take for the baseball to reach the hitter?

If it has enough kinetic energy, a moleculeat the surface of the Earth can escape the Earth's gravitation. The acceleration of gravity is 9.8 m/s2, and the Boltzmanns' constant is 1.38066*10-23 J/K.

True or False. Alcohol is toxic to most fruit flies, but fruit flies that metabolize alcohol quickly survive alcohol exposure better than normal metabolizers.

Aerobic exercise is exercise where oxygen is not present. Question options: True False

The force between a pair of. 005 charges is 750 N. What is the distance between them?

A perpetual motion machine can never be built because it is not possible to eliminate A) Momentum B) Inertia C) Elasticity D) Friction