Explain why a diverging lens is used to correct nearsightedness (difficulty seeing objects far away).

A hollow steel ball of diameter 3.0 m barely floats in water. What is the thickness of the wall of the ball? The density of iron is 7.87 g/cm3 and that of water is 1000 kg/m3. A) 37 cm B) 6.6 cm C) 79 cm D) 131 cm

A test charge is placed at a distance of 3.5 meters from a charge of 8.7 x 109 coulombs. What is the electric field strength at the test charge? (k 9.0 x 109 newton-meter2/coulomb)

2. A block of wood 3 cm on each side has a mass of 27 g. What is the density of the block? (Hint, don't forget to find the volume of the wood.)

There are pluses and minuses to being a competitive person. True False

Which of the following are homogeneous solutions?

An electric motor consumes 10.8 kJ of electrical energy in 1.00 min. Part A If one-third of this energy goes into heat and other forms of internal energy of the motor, with the rest going to the motor output, how much torque will this engine develop

Which of the following statements is most likely to be true of pseudoscience? O A. Spokespersons are paid for their testimony O B. Data are collected by an unbiased research group. O C.

Place these bodies of our solar system in the proper order of formation. outer planets Inner plants solar nebula the Sun planetesimals

Why do electrical devices have resistance

Arrange the steps of energy production in the correct order. Tiles consumption of food cellular respiration in mitochondria breakdown of starch into glucose absorption of glucose molecules creation of ATP