A 12500 kg railroad car travels alone on a level frictionless track with a constant speed of 17.0 m/s. a 5800 kg load, initially at rest, is dropped onto the car. what will be the car's new speed?

Magnetic fields interact with each other just like electric fields do. True False

11) An airplane is moving at a net force of zero. This means the airplane is A. slowing down and losing altitude B. moving at a constant speed and losing attitude C. slowing down and traveling along a straight line D.

Carbon-14 is a naturally-occuring, stable isotope that is commonly used is scientific studies as a tracer and to date artifacts. Using the periodic table, predict the number of electrons, neutrons, and protons in carbon-14.

When you see fireworks, why do you see the blast before you hear the sound?

In a series circuit, there are 12 light bulbs, each providing 1 ohm of resistance. What is the total resistance? Group of answer choices

What is a result of using a machine?

A boy rides motorbike with velocity of 20 m/s He accelerates his motorbike to a velocity of 30 m/s for 5 second. Calculate the acceleration produced in the motorbike. [Ams 2ms

How is a star's emission spectrum used to study stars?

A 52.0 kg skateboarder does a trick on a half-pipe. During the trick, he reaches a speed of 8.90 m/s. The radius of the half-pipe ramp is 3.00 meters. What is the minimum centripetal force necessary to keep the skater on the ramp?

When you are ice skating, to get started, you push your skate backwards on the ice and, as a result, begin to move forward. Which law of motion is being described in this scenario?