If a business was made up of ten large pickup trucks and the workers had to back them under a machine lifting bails of hay to be lowered into the truck bed, which simple machine would be best for the job?

Being rejected by a peer group can negatively influence one's self-esteem

Which of the following objects is NOT normally used in current space exploration? a. space shuttles c. single use rockets b. space stations d. space probes

Suppose you had used a less sensitive balance for the Archimedes method of getting volume of an object based on the difference in mass in water and out of water. Would that change the precisions of your density for that method?.

A proton moves at a speed of 1,140 m/s in a direction perpendicular to a magnetic field with a magnitude of 0.78 T. If the proton is replaced with an electron, how will the magnitude of the force change?

When Kay added 30 g of hydrochloric acid to 65 g of Zn bubbles appeared and a white precipitate Zion chloride was produced she found that the mass of the zinc chloride was 93 g since the law of conservation of matter stated that matter can't be

Two sounds are played for you. The first has a frequency of 196 Hz. The second has a frequency of 392 Hz. Which sound will be "higher" to your ear? A) The First B) The Second C) They will sound the same

When is an object that has been dropped from a great height through the air closest to vein in a free fall? At it's terminal velocity < - - this one?

A 0.300-kg puck, initially at rest on a horizontal, frictionless surface, is struck by a 0.200-kg puck moving initially along the x axis with a speed of 2.00 m/s. After the collision, the 0.200-kg puck has a speed of 1.00 m/s at an angle of? = 52.0

Ariella drove 40 miles to see her cousin. The trip took Ariella 2 hours. Then drove from her cousins house to a store for 30 miles. It took Ariella to hours to Ariella to arrive at the store. What was the average speed of the trip

A meandering river is flowing in a broad, alluvial valley and the river is silt-laden but also moves sand and a small amount of gravel. The government decides to build a dam across the valley for power and flood control.