Which kind of molecule passes through the lipid bilayer of the cell membrane?

a. cholesterol

b. phospholipid

c. integral protein

d. peripheral protein

a soccer player kicks a ball. According to Newton's third law of motion, the player's foot exerts a force on the ball. The ball exerts a force on the foot. Why don't the forces cancel out to result in a net force of zero?

Best definition of an atom A) charged particles that make up all living things B) Negatively charged particles that flow in electric current C) Small particles that make up all matter

A 75.3 kg bobsled is pushed along a horizontal surface by two athletes. After the bobsled is pushed a distance of 8.1 m starting from rest, its speed is 7.1 m/s. Find the magnitude of the net force on the bobsled. Answer in units of N

A horizontal force of 400.0 N is required to pull a 1760 N truck across the floor at a constant speed. Find the coefficient of sliding friction.

When the net forces equal 0 N, they are which of the following? A. Balanced B. Unbalanced C. A push D. A pull

Technician A says that engine parts should be be cleaned before a thorough test can be done to detect cracks. Technician B says that pressure testing can be used to find cracks in blocks or cylinder heads. Who is right?

How are mathematics and science related?

Radio telescopes detect waves with a wavelength of roughly 10 m. True False

2. A 0.30 kg ball is dropped onto a concrete driveway. The ball's velocity before impact is 4.5 m/s and after impact is 4.2 m/s. What is the change in the ball's momentum?

If we start with 400 atoms of a radioactive substance, how many would remain after one half-life? After 2 half-lives? After 3 half-lives? After 4 half-lives?