Which does not use a wheel and axle?

A doorknob,

a pencil sharpener,

a skateboard,

a rolling pin,

an eggbeater,

a saw.

What is a permanent magnet

What do scientists study to figure out how long it takes the Sun to make one rotation on its axis? A. flares B. auroras C. sunspots D. prominences

Carbohydrates, fats, proteins: These organic molecules ALL have this element in common. This element can form multiple bonds, and it bonds with other elements as well as with itself. This element is

Why would a orange roll off your cafeteria tray if you stopped suddenly

A glider of mass 360. kg coasts at 22.0 m/s at an altitude of 0.20 km. What is its mechanical energy?

A projectile was launched horizontally with a velocity of 468m/s, 1.86m above the ground how long did it take the projectile to hit the ground

A racquet ball with mass m = 0.241 kg is moving toward the wall at v = 13.7 m/s and at an angle of θ = 34° with respect to the horizontal.

What type of plate boundary would be found along the coast line near Japan's volcanic mountain ranges

When the current in a toroidal solenoid is changing at a rate of 0.0270 A/s, the magnitude of the induced emf is 12.5 mV. When the current equals 1.30 A, the average flux through each turn of the solenoid is 0.00245 Wb.

A spring tide can occur at what day and month?