Gina wheels her wheelchair up a ramp using a force of 80 Newtons. If the ramp has a mechanical advantage of 7 what is the output force in newtons

One difference between a hypothesis and a theory is that a hypothesis

What is the scientific law?

The world long jump record is 8.95 m (Mike Powell, USA, 1991). Treated as a projectile, what is the maximum range obtainable by a person if he has a take-off speed of 9.5 m/s? State your assumptions.

What is meant by an objects acceleration? a. distance covered in an amount of time b. how fast an object is changing speed c. force needed to change an objects motion d. magnitude of a push or pull

Why does a lone pair of electrons occupy more space around a central atom than a bonding pair of electrons?

A galilean telescope adjusted for a relaxed eye is 36cm long. If the objective lens has a focal length of 40cm, what is the magnification?

If a car goes along a straight road heading east and speeds up from 45 ft/s to 60. ft/s in 5 sec, calculate the acceleration

To generate higher profit margins, producers must work to increase their total supply. increase their total expenses. decrease their customer base. decrease their production costs

Solar energy isn't usually used as the only power source for a reason because what

What particle can be stopped by skin