Atiming device on a pacemaker requires a time constant of 0.5 seconds. what value must the capacitor be if the resistor of the rc circuit has a values of 10,000 ohms (ω)?

What are the three ways that an object can accelerate

Unpolarized light of intensity so passes through two sheets of polarizing material whose transmission axes make an angle of 60∘ with each other as shown in the figure. what is the intensity of the transmitted beam, st?

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?