Which of the following explains why a bicycle uses a lever?

reduces the effort force*I picked this one

increases the effort force

reduces the resistance force

increases the resistance force

A Carnot engine whose high-temperature reservoir is at 620 k takes in 550 J of heat at this temperature in each cycle and gives up 335 J to the low temperature reservoir.

To calculate the frequency of an electromagnetic wave, you need to know the speed of the wave and its a. wavelength. b. intensity. c. refraction. d. amplitude.

Does distance from modem affect internet speed

In the formula Q = m * c * ΔT, which symbol represents specific heat? m c ΔT Q

What type of lens is used to make objects appear smaller and clearer convex or concave?

A person runs at a speed of 4 meters per second. How far will the person travel in 40 seconds?

How much energy, in Joules, is needed to raise the temperature from 25.87°C to 33.16°C in a 2.66 kg block of each of the following materials? Silver has a specific heat of 0.235 J/g·K, iron has a specific heat of 0.

In soccer, When throwing in the ball for a throw-in a player may use one hand like a baseball throw? true or false

If a source of sound waves is rapidly approaching a person, the sound heard by the person appears to have A. a frequency higher than the original frequency. B. a pitch lower than the original pitch. C. a period higher than the original period. D.

Waves on a pond are an example of which kind of wave? a. sound b. surface c. deep water d. non-mechanical