Grigoriy S.

A student scores of 84 and 92 on the first two tests in her Algebra 2 class. What score does she need to get on the third test to make an average on the three tests 90 so that she can get an 'A'... more

According to legend, the following challenge led Archimedes to the discovery of his famous principle: Hieron, king of Syracuse, was suspicious that a new crown that he had received from the royal... more

LAW OF ACCELERATION  A 350 kg boat is moving with a force of 30N i+ (-45N) j. (a) identify the direction of the boat.(b)What is the magnitude of the horizontal and vertical components of... more

Materials: 2 rubber bonds and ruler/ tape measureProcedure:1. Tie the two rubber bond together.2. Each person should pull back the end of the rubber bond. Record the two readings using a ruler or... more

Figure image: Triangle has B on top left side, A on bottom corner left side, D on bottom left side, and C on bottom corner right side.In ABC, suppose AB=15 cm, BC=15 cm, AD=2x-8 cm, and DC=4x - 20... more

An object’s tendency to maintain its current state of motion is due to which property:A. speedB.massC.weightD.accelerationE. all of theseA skydiver leaps from a plane and accelerates toward the... more

The first car has twice the mass of a second car, but only half as much kinetic energy. When both cars increase their speed by 6.0 m/sm/s , they then have the same kinetic energy. What were the... more

The shape of the earth's orbit around the sun is essentially a circle. Assuming the earth maintains a constant speed as it orbits around the sun, which statement about the earth's motion is most... more

How much would a 100-kg object weigh at two earth’s radii above the earth’s surface?I’m thinking it would mass times gravity, and then divide by 4 because the square of 1/2 is 1/4 for two earth... more

A rock is thrown (not dropped) straight down from a bridge into the river below. What is the magnitude of rock's acceleration immediately after being released? Disregard air resistance. a) greater... more