Ball made of wood and ball made of aluminum, of the same radius are placed into reservoir with water. aluminum ball after sinking rests at the bottom, wooden ball floats. which ball experiences greater buoyancy force? (14.4)

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.

The maximum wavelength of light required to eject an electron from zinc is 270nm. calculate the threshold frequency of zinc.

Multiply 5.036×102m by 0.078×10−1, taking into account significant figures.