A meter stick is balanced at the 50 cm mark. You tie 70 N weight at the 30 cm mark. What weight at the 90 cm mark would create a rotational equilibrium?

Which of the answer choices best defines mixture? combination of two or more substances that can be separated using only chemical means combination of two or more substances that can be separated using physical means combination of two or more

A moving ball with a momentum of 25 kg m / s collides head-on with a wall. It rebounds from the wall with the same speed but in the opposite direction. The time of the collision is 50 ms.

1. The physical or chemical properties a substance is known for are called its - properties. a. material C. characteristic b. static d. basic

What force must be exerted on the master cylinder of a hydraulic lift to support the weight of a 2000-kg car (a large car) resting on the slave cylinder? the master cylinder has a 2.00-cm diameter and the slave has a 24.0-cm diameter?

A fireman is sliding down a fire pole. As he speeds up, he tightens his grip on the pole, thus increasing the vertical frictional force that the poleexerts on the fireman.

A flash of white light containing all the colors of the visible spectrum in air shines straight down on the surface of a pool.

A car accelerates uniformly from 0 to 15m/s in 5 s. Calculate acceleration.

Which device would a sleep researcher use to monitor a sleeping person's brain waves?

An experiment is performed to obtain the value of a physical property. If the true (i. e., correct) value of the property is 50 and the measured (i. e., experimental) value is 32, the percent error of the experimental result is:

White moths were found in huge numbers in the city of Birmingham. These moths could be easily camouflaged by the trees. Because of sudden industrial development, the trees in the city were covered with soot.