A balloon is inflated from negligible initial volume to 300 cm3. How much work is done by the balloon on the surroundings if the pressure opposing expansion is 1 bar

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Which of the following is an example of units for speed

Asap i'm in class rn a 1,000-kg car is traveling 20 m/s on a flat stretch of road. it gets to a hill and coasts uphill until it stops. how high up the hill does the car travel? givens: equation: 1/2mv2initial=mghfinal solve for h. plug & chug, label.