When a depolarization shifts the membrane potential to -55mV (threshold), a massive all-or-nothing change in membrane voltage will occur; this is called a(n) .

Aball is thrown straight up into the air with a speed of 21 m/s. if the ball has a mass of 0.1 kg, how high does the ball go? acceleration due to gravity is g = 9.8 m/s^2. a. 22.5 m b. 20.0 m c. 25.0 m d. 17.5 m

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

According to newton’s first law of motion, which force is expected to cause a body to accelerate?