Problem 15.41

Please do not include your response in a .pdf or .cdx format, but Word documents are okay. Thanks! Here's the actual problem: A U-shaped tube, open to the air on both ends, contains mercury. Water is poured into the left arm until the water column is 13.1 cm deep. How far upward from its initial position does the mercury i ...continues

Playing with a Water Hose

Please do not place your response in a .pdf or .cdx format, but Word documents are okay. Thanks! Here's the actual problem: Two children, Ferdinand and Isabella, are playing with a water hose on a sunny summer day. Isabella is holding the hose in her hand 1.0 meters above the ground and is trying to spray Ferdinand, who is ...continues

Problem 15.18

Please do not place your response in a .pdf or .cdx format, but Word documents are okay. Thanks! Here's the actual problem: A 10 cm x 10 cm x 10 cm wood block with a density of 700 kg/m^3 floats in water. What is the distance from the top of the block to the water if the water is fresh? If it's seawater?

Volume of Copper

Please do not place your response in a .pdf or .cdx format, but Word documents are okay. Thanks! Here's the actual problem: What is the volume V of a sample of 3.70 moles of copper? Express your answer in cubic centimeters.

Calculating moles using volume, density, molar mass, pressure and temperature

Acid rain is a growing worldwide environmental problem. Naturally, rainwater should have a pH of not less than 5.5, but in the northeastern United States for example, the average pH of the rainwater is about 4.5. The increased acidity of the rain kills plants and animals in lakes and streams, causes increased weathering and deco ...continues

Motion of a Block with Three Forces

Please do not place your response in a .pdf or .cdx format, but Word documents are okay. Thanks! Please see attached for actual problem.

Physics (Friction forces)

**(Parameters and diagram given in attachment) Problem: Find Fmin, the constant force with the least magnitude, that must be applied to the board in order to pull the board out from under the box (which will then fall off of the opposite end of the board).

Problem 5.40

Please do not place your response in a .pdf or .cdx format, but Word documents are okay. Thanks! Here's the actual problem: Sam, whose mass is 75 kg, takes off across level snow on his jet-powered skis. The skis have a thrust of 200 N and a coefficient of kinetic friction on snow of 0.1. Unfortunately, the skis run out of ...continues

Physics (solving for optimal diameter of rope to support given weight)

An artist friend of yours needs help hanging a 500 lb sculpture from the ceiling. For artistic reasons, she wants to use just two ropes. One will be 30 degrees from vertical, the other 60 degrees. She needs you to determine the smallest diameter rope that can safely support this expensive piece of art. On a visit to the hardware ...continues

Problem 15.41

Please do not place your response in a .pdf or .cdx format, but Word documents are okay. Thanks! Here's the actual problem: A U-shaped tube, open to the air on both ends, contains mercury. Water is poured into the left arm until the water column is 13.1 cm deep. How far upward from its initial position does the mercury in ...continues