A train is accelerating at a rate of 2m/s2. if it's initial velocity is 20 m/s, what is its velocity after 30 seconds

Which has frequency below the audible range? (a) Ultrasonic (b) Supersonic (c) Infrasonic (d) All of these

Which of the following describes velocity only in terms of metric units? A. miles per hour B. feet per minute C. miles per second D. meters per second

We wrap a light, nonstretching cable around a 10.0 kg kg solid cylinder with diameter of 38.0 cm cm. The cylinder rotates with negligible friction about a stationary horizontal axis. We tie the free end of the cable to a 14.

Two small objects are suspended from threads. When the objects are moved close together, they attract one another. What of the following could produce this result? a. On object is positively charged and the other is negatively charged. b.

Which action can be explained by physics

A cake is removed from a 375°F oven and placed on a cooling rack in a 63°F room. After 30 minutes the cake is 175°F. When will it be 150°F? (Round your answer to two decimal places.)

Which of the following are examples of natural forces? A. optical B. phase C. gravity D. nuclear

Sara went 25 m in 4 s. How fast did she go?

Akash, a punter in a football game kicks a ball from the goal line at 52.0° from the horizontal at 29.0 m/s. a) What is the hang time of the punt? b) How far down field does the ball land?

A 0.100-kilogram apple falls from a height of 1.50 meters to 1.00 meters. Ignoring frictional effects, what is the kinetic energy of the apple at this height?