Find the magnitude of the force exerted on bolt E, given: P = 90 lbs, L1 = 0.3 in, L2 = 4.5 in, L3 = 1.3 in, L4 = 3 in, L5 = 1.6 in, L6 = 1.5 in, L7 = 0.9 in, L8 = 0.2 in

Light travels 300,000,000m/sec, and one year has approximately 32,000,000 seconds. A light year is the distance light travels in one year. Based on this dаta: a. state the speed in m/sec using scientific notation b.

A force of 60 n stretches a spring 0.73 m from equilibrium. what is the value of the spring constant? a force of 60 n stretches a spring 0.73 m from equilibrium. what is the value of the spring constant? 82 n/m 44 n/m 92 n/m 67 n/m

What is the most likely reason that a hypothesis would be useful even if experiments show that is false

Friends Burt and Ernie stand at opposite ends of a uniform log that is floating in a lake. The log is 3.0 m long and has mass 20.0 kg. Burt has mass 30.0 kg; Ernie has mass 40.0 kg.

When a contest between two candidates is very close, people are a. more likely to vote. b. less likely to vote. c. unlikely to notice.' d. more likely to join a political party.

What causes chemical weathering? a. damage caused by animals and plants c. natural acids b. ice wedging d. physical factors

1. Strzała o masie 20 g tuż po wystrzale ma prędkość 50 m/s. Oblicz pracę wykonaną przez zawodniczkę. Ile wynosi energia potencjalna sprężystości napiętej cięciwy? 2. Na trampolinę o współczynniku sprężystości k=2 kN/m stanął zawodnik o masie 80 kg.

Two small plastic spheres between them has magnitude 0.22 N. What is the charge on each sphere is one the other? Explain whether it can be determined from the information give, whether the charges are positive or negative.

If it has enough kinetic energy, a moleculeat the surface of the Earth can escape the Earth's gravitation. The acceleration of gravity is 9.8 m/s2, and the Boltzmanns' constant is 1.38066*10-23 J/K.

True or False. Alcohol is toxic to most fruit flies, but fruit flies that metabolize alcohol quickly survive alcohol exposure better than normal metabolizers.