Which of the following best describes the jet stream? it is a current in the atmosphere. it is a current in a river. it is a current in the ocean. it is a stream of low pressure in the atmosphere.

Change in temperature of body is 50°C the change in temperature on Kelvin scale is? Ans is 5oK

Five race cars speed toward the finish line at the Jasper County Speedway. The table lists each car's speed in meters/second.

Which of the following changes can happen when the forces on an object are unbalanced? a. The object speeds up b. the object slows down c. the object changes direction d. all of the above

A skateboarder has an acceleration of - 1.9 m/s2. If her initial speed is 6 m/s, how long does it take her to stop?

In a car changes its philosophy from 32 km/hour to54 km/hour in 8.0 seconds, what is its acceleration?

How does a change in resistance affect the conductivity of a material? A) The lower the resistance, the worse the conductivity B) The lower the resistance, the better the conductivity C) The higher the resistance, the better the conductivity D) The

Two railroad cars, each of mass 6500 kg and traveling 80 km/h in opposite directions, collide head-on and come to rest. how much thermal energy is produced in this collision?

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?