Two equal-magnitude forces are applied to a door at the doorknob. the first force is applied perpendicular to the door, and the second force is applied at 60â° to the plane of the door. which force exerts the greater torque about the door hinge?

a. the first force (applied perpendicular to the door)
b. both forces exert equal non-zero torques
c. both forces exert zero torque
d. the second force

Luke and carrie are driving down a straight section of the interstate at 70 mph in luke's new convertible. carrie is drinking a soda in the passenger seat. when she is done she tosses the bottle straight up in the air, just above the height of the car. what will happen to the bottle if air resistance is neglected? a. the bottle will land in carrie's lap. b. not enough information is given. c. the bottle will land on the interstate in front of the car. d. the bottle will land on the interstate behind the car.

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

Sound is a disturbance that travels through a medium as a