Calculate the efficiency of an engine if the work input is 300. j and the work output is 100. j

Is distance and displacement the same thing

A bird has a mass of 0.8 kg and flies at a speed of 11.2 m/s. How much kinetic energy does the bird have?

A coffee-maker contains a heating element that has a resistance of 28 Ï. this heating element is energized by a 120-v outlet. what is the current in the heating element?

According to KMT, if the temperature of a gas is increased, there will only be a constant pressure if the volume increases. If this occurs, there will be a decrease in the frequency of collisions with the container walls.

Which of the following is NOT a possible cause of a genetic disorder in humans? changes in the number of chromosomes mutations in the DNA of genes being born underweight changes in the structure of chromosomes

Which of the following do not involve a direction? Check all that apply. A. Time B. Velocity C. Distance D. Acceleration

What does deltaX mean in physics?

Which activity involves using fossil fuels directly or indirectly? 1) eating fresh fruit for a snack 2) cooking hot dogs on a campfire 3) using crayons to color 4) walking to school

Which of the following objects would have the most inertia? A. A sphere with a radius of 5 cm and a mass of 34 grams. B. A sphere with a radius of 4 cm and a mass of 15 grams. C. A sphere with a radius of 8 cm and a mass of 27 grams. D.

A boy slides a book across the floor using a force of five and over a distance of 2M what is the kinetic energy of the book after he slides at assume there is no friction