How does the force required to lift an object in water compare to the force needed to lift the same object on land? it is the exactly the same for the same object. it can be either greater or less, depending on the object. it is more. it is less.

Explain why the aperture of the spherical mirror should be small compared to the radius of curvature of the mirror.

According to newton's second law, when the same force is applied to two objects of different masses, a the object with greater mass will experience a great acceleration, and the object with less mass will experience an even greater acceleration, b. the object with greater mass will experience a smaller acceleration, and the object with less mass will experience a greater acceleration, c. the object with greater mass will experience a greater acceleration, and the object with less mass will experience a smaller acceleration, d. the object with greater mass will experience a small acceleration, and the object with less mass will experience an even smaller acceleration.

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects