Which of the following are not marsupials? a. kangaroos. c. opossums. b. koalas. d. echidnas.

Calculate the amount of energy produced in a nuclear reaction in which the mass defect is 0.187456 amu.

4. A 40 kg child and a 30 kg child want to balance themselves on a 4 meter, 50 kilogramn see-saw. Where should the fulcrum be placed?

The pressure inside a hydrogen-filled container was 2.10 atm at 21 ∘ c. what would the pressure be if the container was heated to 85 ∘ c? express your answer with the appropriate units.

An object with a mass of 7.8 kg is pulled on a horizontal surface by a horizontal pull of 50 N to the right. The friction force on this object is 30 N to the left. What is the acceleration of the object? 0.16 m/s^2 10 m/s^2 2.6 m/s^2 6.4 m/s^2

Most of in atom is in its what?

How do you find period when you have frequency

Which electromagnetic waves have a higher frequency than visible light

Calculate the speed for a car that went a distance of 125 miles in 2 hours time

A small 25 kilogram canoe is floating downriver at a speed of 4 m/s. What is the canoe's kinetic energy?

A car traveling on a flat (unbanked), circular track accelerates uniformly from rest with a tangential acceleration of 1.85 m/s2. The car makes it one quarter of the way around the circle before it skids off the track.