How much force should a mother exert to lift a 5.0-kg child

Imagine that the Earth's orbit changes to be a perfect circle about the Sun (the distance to the Sun is constant). How would this affect the four seasons we experience during a single year?

What best describes the energy in a closed system at the beginning of a day and the energy at the end of the same day? Check all that apply. Some energy can disappear after it has caused motion. Some energy can be changed from one form to another.

For conduction to occur, A. dark objects are required to absorb energy. B. substances must be in contact with each other. C. hot and cold regions must flow within a substance. D. heat must transfer from an area of less energy to more energy.

A sample of helium gas has a volume of 900. milliliters and a pressure of 2.50 atm at 298 K. What is the new pressure when the temperature is changed to 336 K and the volume is decreased to 450. milliliters?

Which is the best procedure to make a permanent magnet

The density of uranium is 18.8 g/cm3. part a what is this value in kilograms per cubic meter?

What name is given to the variable we plot on the x-axis? A. The dependent variable B. The independent variable c. The linear variable D. The inverse variable

What force is required to accelerate a body with the mass of 15 kilograms at a rate of 8m/s2?

Indicate whether the statement is true or false. A scientific fact is something that is absolute and unchanging.

Show the formula and caculate the speed of a car that traveled 100 km in 2 hours