Lincoln weighs 400 newtons. What's his mass rounded to the nearest kilogram? Assume that acceleration due to gravity is 9.8 N/kg.

Normal rainfall is slightly acidic which means its pH must be

Why didn't the astronauts land on the moon math worksheet answers?

Mark places new batteries in his CD player and turns it on. Identify the correct energy transformation. A. Electrical → chemical → mechanical and sound B. Chemical → electrical → mechanical and sound C. Sound → chemical → mechanical and electrical D.

A bicycle takes 8 seconds to accelerate at a constant rate from rest to a speed of 4 m/s. If the mass of the bicycle and rider together is 85 kg, what is the net force acting on the bicycle?

The distance between two slits in a double-slit interference experiment is 2.9 x 10-6 m. The first-order bright fringe is measured on a screen at an angle of 12 degrees from the central maximum. What is the wavelength of the light

Two very small spheres are initially neutral and separated by a distance of 0.30 m. Suppose that 2.50 1013 electrons are removed from one sphere and placed on the other. (a) What is the magnitude of the electrostatic force that acts on each sphere?

Why is it important to balance a chemical equation? A. It is not important to balance a chemical equal B. To make sure you have the correct products C. To make sure you have the correct reactants D. To obey the law of conservation of mass

The presence of icicles hanging off the eaves of a wood-framed structure is most likely due to: heavy snow followed by a thaw. improper insulation in wall cavities. use of a poor-quality roof sheathing material. lack of proper roof ventilation.

Both gravitational potential energy and kinetic energy depend on

How much work is done when a 105 g tomato is lifted 19.2 m?