What does "spectrum" mean?

Imagine that a tank is filled with water the hight of the liquid column is 7 meters and the area is 1.5 sq meters (m™). what's the force of gravity acting on the column of water.

A proton is moving at 2.1 x 10 m/s clockwise through a constant and perpendicular magnetic field. The radius of curvature through the field is 0.6 meters. What is the strength of the magnetic field?

Which data set has the largest standard deviation? A. 20, 21, 23, 19, 19, 20, 20 OB. 1.6,3, 15, 4, 12, 8 O C. 3.4.3.4.3.4.3 O D. 12. 14, 13, 14, 12, 13, 12

What describes an endothermic reaction

A crate at rest applies a force of 147 newtons on the floor. If the coefficient of static friction is 0.3, what is the maximum force of friction that resists the movement of the crate?

What will happen if I put my hand in a space vacuum.

You are exploring a distant planet. When your spaceship is in a circular orbit at a distance of 630 km above the planet's surface, the ship's orbital speed is 4900 m/s. By observing the planet, you determine its radius to be 4.48*106m.

What happens when an electric current passes through a wire?

A small car of mass m and a large car of mass 4m drive along a highway at constant speed. they approach a curve of radius r. both cars maintain the same acceleration a as they travel around the curve.

Two physics professors challenge each other to a 100 m race across a football field. The loser will grade the winner's lab reports for a month. Dr. Nelson runs the race is 10.40s. Dr. Bay runs the first 25.0 m with an average speed of 10.