What is the mechanical advantage supplied by a 1000 N object lifted using 250 N of force

How is the human heart adapted to its function?

Which process makes a river become curvier? A. deposition B. weathering C. lithification D. erosion

ou are to drive to an interview in another town, at a distance of 300 km on an expressway. The interview is at 11:15 a. m. You plan to drive at 100 km/h, so you leave at 8:00 a. m. to allow some extra time.

Which of the following is a unit of volume of solids? Cubic meters Square meters Liters per cubic gram Gram per cubic centimeter

Describe physical abuse

What color of light can plants "see"?

Two tiny beads are 25 cm apart with no other charges or fields present. Bead A carries 10 µC of charge and bead B carries 1 µC. Which one of the following statements is true about the magnitudes of the electric forces on these beads

A ball is thrown straight up at 20 m. What is the balls velocity as it hits the ground?

Block 1 and Block 2 have the same mass, m, and are released from the top of two inclined planes of the same height making 30 degree and 60 degree angles with the horizontal direction, respectively.

Water waves change direction when they encounter water of different depths and begin to move at different wave speeds. This is called A. reflection B. constructive interference C. the Doppler effect D. refraction