In what state is gold at a 800°c

A 235-kg crate is pushed horizontally with a force of 791 n. if the coefficient of kinetic friction is 0.25, calculate the acceleration of the crate.

Which are characteristics of natural selection? Check all that apply. It affects populations. It affects only individuals. It occurs when there is genetic variation. It occurs when organisms are genetically identical.

How does a roller coaster convert potential energy to kinetic energy and then back to potential energy again and again?

Sian wants to measure the number of seconds that it takes for the contents of a beaker to change from clear to purple. Which of these tools should she use for this purpose? 1 an electronic balance 2 a stopwatch 3 a barometer 4 a graduated cylinder

A 1kw electric heater is switched on for ten minutes. how much heat does it produce

11) Shifting with ease from one type of problem-solving strategy to another is called a) flexibility b) versatility c) originality d) openmindedness

A truck undergoes a constant acceleration of 2.0 meters/second2 on a highway that slopes upward at an angle of 30.0° to the horizontal. What is the magnitude of the horizontal component of the acceleration?

Why is there so much more carbon dioxide in the atmosphere of Venus than in that of Earth? Why so much more carbon dioxide than on Mars?

People have proposed driving motors with the earth's magnetic field. This is possible in principle, but the small field means that unrealistically large currents are needed to produce noticeable torques.

A hot air ballon with a mass of 500kg ascends at a constant rate of 1.5 m/s for 20s. how much work is done by the upward force?