An ice cream machine produced 44 ice creams per minute. After reconditioning, its speed increase to 55 ice creams per minute. By what percent did the speed of the machine increase

Which simple experiment could be conducted to show an example of how lightning is created?

Static electricity can attract and repel. a. True b. False

What type of simple machine can be used to reduced the resistance force of friction?

An aeroplane flies from London to Singapore, a total distance 7000 miles. The flight lasts 14 hours. Calculate the average speed of the aeroplane in mph.

Explain why Uranus takes longer than Mars to revolve around the sun.

One isotope of sodium has 11 protons and 7 neutrons. What is the mass number of this isotope?

A beverage can is thrown upward and then falls back down to the floor. As usual, a y axis extends upward (positive direction). Which of the following best describes the acceleration of the can during its free flight?

Which of the following devices can be used to measure force? A. Bathroom scale (b) spring scale c. Force sensor d. All of the above.

Your friend says your body is made up of more than 99.9999% empty space. What do you think

What is the momentum of a 30-kilogram cart moving with a speed of 10 meters per second