Astronomers use tiny wobbles of distant stars to detect the presence of planets orbiting those stars. This occurs because the star exerts a gravitational pull on the planet while the planet

When a virus enters a living cell, the virus a. eats the cell b. makes the cell produce more cells c. dies d. causes the cell to make more viruses

What is the momentum of a 76-kilogram horse running at a speed of 45 kilometers/hour? A) 2.5 x 10^2 kilogram-meters/second B) 3.4 x 10^4 kilogram-meters/second C) 3.4 x 10^3 kilogram-meters/second D) 9.5 x 10^2 kilogram-meters/second

What is the magnitude of the displacement of a car that travels half a lap along a circle of radius of 150m?

Mars passes closer to earth than jupiter does, but with an earth-based telescope it is easier to see details on jupiter than on mars. why is this?

What is a tool that measures the size of a force

How many watt-hours does a 80 watt light bulb use if it runs for 3.5 hours?

A series circuit contains two devices, one with a resistance of 10 ohms and one with a resistance of 4 ohms. If the generator supplies a voltage of 42 V, what is the magnitude of the current? A. 2 A B. 3 A C. 1.75 A D. 1.33 A

What is the relationship between speed and the slopes of the lines on a graph

The basic building blocks of matter are called

A Heavy crate applied a force of 1500 N on a 25m2 piston. What force needs to be applied on a 0.8m2 piston to lift the crate?