In Archimedes’ principle experiment, the weight of the object was measured in air and recorded (1.083 N). The object was placed in water, and the apparent weight of the object was measured to be 0.873 N. Determine the density of the object (in kg/m3). (density of water is 1.00 x 103 kg/m3 and g = 9.80 m/s2)

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.

You want to move a heavy box with mass 30.0 kg across a carpeted floor. you pull hard on one of the edges of the box at an angle 30∘ above the horizontal with a force of magnitude 240 n, causing the box to move horizontally. the force of friction between the moving box and the floor has magnitude 41.5 n . what is the box's acceleration just after it begins to move