PLS PLS HELP and DON'T SEND LINK IF YOU DO YOU'LL BE BLOCKED GYMNASIUM PHYSICS

Exercises
1.A pendulum performs 60 complete oscillations in 2 minutes. Find the period and frequency of the pendulum.

2.The bee's wings, when it flies, oscillate at a frequency of 225 Hz. Calculate how many times its wings go up and down in 1 s as well as the oscillation period.

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Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire

In a game of pool, ball a is moving with a velocity v0 of magnitude v0 = 15 ft/s when it strikes balls b and c, which are at rest and aligned as shown. knowing that after the collision the three balls move in the directions indicated and assuming frictionless surfaces and perfectly elastic impact (that is, conservation of energy), determine the magnitudes of the velocities va, vb, and vc.

The bubbles in a carbonated soft drink are produced when carbonic acid decomposes to form carbon dioxide and water. in a closed system, this equilibrium exists as why does a carbonated soft drink lose carbonation when the container is left open? a. water evaporates, which favors the formation of h2co3. b. pressure decreases, which favors the formation of h2co3. c. the open container warms up, which causes more gas to escape. d. co2is removed, which favors the formation of h2co3.