How many days a week should ab children an teenagers get 60 minutes of physical activity

An electroscope is a device that has small gold foil strips suspended from a metal rod. A student brings a negatively charged rod near the top of a neutral electroscope.

While driving down the road, an unfortunate bug strikes the windshield of a bus obviously, this is a case of Newton's third law of motion. The bug hit the bus and nit the bug.

The world record for the hundred meter dash is 9.77 s. what is the corresponding average speed in units of m/s, km/h, ft/s, and mi/h?

According to Newton's first law, which characteristic of a moving object would remain constant if there were no other forces acting on it?

Which of the following is true about rows of the periodic table? Atomic mass increases from left to right.

How can the time period of a pendulum be decreased or increased

A space probe is sent to the vicinity of the star Capella, which is 42.2 light-years from the earth. (A light-year is the distance light travels in a year.) The probe travels with a speed of 0.9930c.

ngrid kicks a football with an initial velocity of 12 m/s at an angle of 45° relative to the ground. The horizontal component of the initial velocity to the nearest tenth is m/s.

A 60-watt light bulb has a voltage of 120 volts applied across it and a current of 0.5 amperes flows through the bulb. What is the resistance of the light bulb?

In a laboratory experiment, a diffraction grating produces an interference pattern on a screen. If the number of slits in (including the slit spacing) the same, then The fringes stay the same brightness and get closer together.