A box (FW = 20 N) is placed on a ramp with a 60° incline. Which of these is an expression for the component of the weight parallel to the ramp?

A. FW = 20 N * sin60°

B. FW = 20 N * cos60°

C. FW = 20 N * tan60°

D. FW = 20 N

Which of the following units is used to express electrical charge? A: Newton B: Coulomb C: Joule

When a light bulb is lit, not all of the energy is transformed into light. Some of the energy is transformed into what?

The coefficient of linear expansion of steel is 12 * 10-6 k-1. what is the change in length of a 25-m steel bridge span when it undergoes a temperature change of 40 k from winter to summer? a. 1.2 cm b. 1.8 cm c. 1.4 cm d. 2.0 cm e. 1.6 cm

Imagine the track in the Gizmo went on forever. If there were no friction, how long would it take the cart to stop after you turned off the fan?

What happens when an object has a density greater than that of the surrounding liquid? O The object will sink, The object will float, The object will become a solid, The object will become a gas, O

A 50.9 kg box initially at rest is pushed 5.65 m along a rough, horizontal floor with a constant applied horizontal force of 247.25 N. If the coefficient of friction between box and floor is 0.466, find the work done by the applied force.

Which of the following best defines absolute threshold? A. The presence of stimulus for detection. B. The absence of stimulus from detection. C. The weakest amount of stimulus one can detect. D. The greatest amount of stimulus one can detect.

Liquid hazardous wastes are blended in a CSTR to maintain a minimum energy content before burning them in a hazardous waste incinerator. The energy content of the waste currently being fed is 8.0 MJ/kg (mega - joules/kilogram).

Explanation's of E=MC²

Suppose two chemicals are reacted together. It takes 750 kJ of energy to break the bonds of the reactants and 1050 kJ of energy are released by the formation of the products. Which statement is true about the reaction? The reaction is exothermic.