For approximately how long has life existed on the surface of the earth visible without a microscope

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?