About 40 j is required to push a crate 4 m across a floor. if the push is in the same direction as the motion of the crate, the force on the crate is about

What is petrified remains

The nebular theory also predicts that the cloud should heat up as it collapses. what physical law explains why it heats up?

What is the difference between heat and temperature? What is Entropy?

A steel piano string of mass per unit lenght 4*10-⁴kgm-¹ was struck, if the speed of the sound on the string is 300ms-¹. Calculate the tension ...

A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1140 Hz. The bird-watcher, however, hears a frequency of 1190 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?

Which statement about ammeters and voltmeters is true? A. Current and voltage are the same throughout a circuit so where you place the ammeter and voltmeter doesn't matter. B.

Teens realize that things may be "shades of gray" after they enter Piaget's social stage. identity crisis stage. menarche stage. formal operational stage.

Technician A says that fractured rods have a unique mating surface and that only the cap that was fractured is the one that will fit that rod. Technician B says that a powdered metal rod is less expensive, lighter, and as strong as a forged rod.

What is the expected wavelength (in cm) of 10.5 ghz microwaves in free space?

There are 5,280 feet in 1 mile and 12 inches in one foot. How many inches are in a mile?