Which of the following answers correctly explains how light waves and radio waves are different from all mechanical waves? A
Radio waves and light waves can move in a vacuum.
B
Light waves and radio waves slow down in a vacuum. Mechanical waves speed up.
C
Radio waves and light waves transmit energy, but mechanical waves transmit matter

Acylindrical specimen of a nickel alloy having an elastic modulus of 207 gpa (30 × 106psi) and an original diameter of 10.2 mm (0.40 in.) experiences only elastic deformation when a tensile load of 8900 n (2000 lbf) is applied. compute the maximum length of the specimen before deformation if the maximum allowable elongation is 0.25 mm (0.010 in.)

Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction