if you shout into the grand canyon your voice travel at the speed of sound (340m/s) to the bottom of the canyon. how depp is the grand canyon at a spot where someone at the bottom can hear your voice 3.5 seconds after you shout

The gravitational force the moon pulls on the earth is equal to, more than, or less than the gravitational force the earth pulls on the moon

As soon as a bowling ball rolls off the edge of a table its horizontal component of velocity

Which of the following situations is impossible a) a body having velocity east and acceleration west b) a body having velocity east and acceleration east c) a body having zero velocity but non-zero acceleration d) a body having constant velocity but

One chef places a pie in the oven at a low setting so that it is baked in one hour. Another chief place a pie in the oven at a high setting so that the pie bakes in 30 minutes. Is the amount of energy the same in each case? Is the power the same?

Being rejected by a peer group can negatively influence one's self-esteem

What is the weight of a 65 kg astronaut on mars?

When lava cools, what type of Rock forms?

A uniformly charged conducting sphere of 1.1 m diameter has a surface charge density of 6.2 µC/m2. (a) Find the net charge on the sphere. (b) What is the total electric flux leaving the surface of the sphere?

A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 12 A, while that of the vacuum cleaner is 5.7 A. Determine the power consumed by (a) the blow-dryer and (b) the vacuum cleaner.

4. A 40 kg child and a 30 kg child want to balance themselves on a 4 meter, 50 kilogramn see-saw. Where should the fulcrum be placed?