Calculate the speed of each velocity given in component form. (a) Components
(Vx, vy) = (3.8, 8.8) m/sec
Speed =
m/sec
(b) Components
(Vx, Vy) = (75, 35) m/sec
Speed
=
m/sec

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?

The current through a 10 ohm resistor is 1.2 amperes.what is the potential difference across the resistor?

When thorium (90 protons) ejects a beta particle, the resulting nucleus has question 18 options: 87 protons. 88 protons. 89 protons. 90 protons. none of the above