Glenn is heating water in a teakettle. The hotter water at the bottom of the kettle rises. The cooler water near the top sinks and warms. Which kind of transfer of heat is this?

A. conduction

B. convection

c. radiation

d. transmission

A cat is moving at 18m/s when it accelerates at 4m/s/s for 2 seconds. what is his new velocity

A 20 kg mass moves at 2 m/s. What is the momentum of the object

A ship is able to float on water because it's density is less than that of the water. A. True B. False

While observing a planet through a telescope, a scientist observes a natural satellite orbiting the planet. What is the best classification for this satellite?

A distant galaxy is determined to be 150 million light years distant and moving away from us; using the Hubble law determine its velocity in terms

Which feature do highland climates have that lower elevation area do not? A tundra where there are no trees A tree line beyond which trees do not grow Permafrost, or a part of the ground that is permanently frozen An ice cap, or a permanent cover of

As shown in the figure below, Cindy rushes 30 mtoward her truck. She notices she forgot her lunch and returns back to the house. Her total travel time is 90s a. What is Cindy's average velocity over the 90s period? b.

Un atleta que recorre 100 m en 12 s

Assuming equal rates of acceleration in both cases, how much farther would you travel if braking from 59 mi/h to rest than from 25 mi/h?

A spherical balloon is filled with gas at a rate of 4 cm 3 / s. at what rate is the radius r changing with with respect to time when the volume v = 36 π cm 3?