1,302 Answered Questions for the topic physical science

Physical Science Chemistry

11/18/20

Calculate the decrease in temperature when 6.00 L at 293.0 °K is compressed to 4.00 L.
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Physical Science Math Science Density

11/16/20

Another Science question
"Perform the following sequence of operations, applying significant rules: Dr. Sormunen's head weighs 5.05 kg. When Dr. Sormunen places his head in a graduated bucket, the water level rises from... more
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Physical Science Math Science Physics

11/15/20

What is the buoyant force on it (in lb)? (Enter the magnitude.)
An ebony log with volume 13.4 ft3 is submerged in water. What is the buoyant force on it (in lb)? (Enter the magnitude.)
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Physical Science Math Science Physics

11/15/20

Find the gauge pressure (in psi) at the bottom of a freshwater swimming pool that is 17.4 ft deep.
Find the gauge pressure (in psi) at the bottom of a freshwater swimming pool that is 17.4 ft deep.
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Physical Science Math Science Physics

11/15/20

What is the mass of the helium (in kg)?
A large balloon used to sample the upper atmosphere is filled with 335 m3 of helium. What is the mass of the helium (in kg)?
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Physical Science Math Science Physics

11/15/20

What volume did the hydrogen occupy?
The total mass of the hydrogen gas in the Hindenburg zeppelin was 18,000 kg. What volume did the hydrogen occupy? (Assume that the temperature of the hydrogen was 0°C and that it was at a pressure... more
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Physical Science Math Science Physics

11/15/20

 What is the total outward force on the window?
A viewing window on the side of a large tank at a public aquarium measures 54 in. by 59 in. The average gauge pressure from the water is 4 psi. What is the total outward force on the window?
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Physical Science Math Science Physics

11/15/20

What is the net outward force (in lb) on the sidewall because of the air pressure? (Enter the magnitude.)
A large truck tire is inflated to a gauge pressure of 72 psi. The total area of one sidewall of the tire is 1,170 in2. What is the net outward force (in lb) on the sidewall because of the air... more
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Physical Science Math Science Physics

11/15/20

what pressure does this produce on the air in the pump?
A bicycle tire pump has a piston with area 0.45 in2. If a person exerts a force of 16 lb on the piston while inflating a tire, what pressure does this produce on the air in the pump?
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Physical Science Math Science Physics

11/14/20

What force had to act on that end?
In the figure, the rock weighs 225 lb and is lifted 1 ft by the lever.(a) How much work is done?(b) The other end of the lever is pushed down 3 ft while lifting the rock. What force had to act on... more
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Physical Science Math Science Physics

11/14/20

How high (in m) will the swing be at the high point?
A child on a swing has a speed of 3.7 m/s at the low point of the arc.How high (in m) will the swing be at the high point?
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Physical Science Math Science Physics

11/14/20

What is its speed when it hits the ground?
A student drops a water balloon out of a dorm window 11 m above the ground. What is its speed when it hits the ground?
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Physical Science Math Science Physics

11/14/20

how fast are the divers going when they hit the water?
The cliff divers at Acapulco, Mexico, jump off a cliff 25.2 m above the ocean. Ignoring air resistance, how fast are the divers going when they hit the water?
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Physical Science Math Science Physics

11/14/20

What is Newton's 3 laws of motion?
What is Newton's 3 laws of motion?Month 11, Day 14For a mass having the weight equal to the Day recorded in 2 (For the example given, 15kg) find the weight of the mass by using the formula F=W=mg... more
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Physical Science Math Science Physics

11/13/20

What is Newton's 3 laws of motion?
What is Newton's 3 laws of motion?Month 11, Day 14For a mass having the weight equal to the Day recorded in 2 (For the example given, 15kg) find the weight of the mass by using the formula F=W=mg... more
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Physical Science Math Science Physics

11/13/20

How much work is done?
In the figure, the rock weighs 225 lb and is lifted 1 ft by the lever.How much work is done?The other end of the lever is pushed down 3 ft while lifting the rock. What force had to act on that end?
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Physical Science Math Science Physics

11/13/20

how much work (in J) does the driver do?
A motorist runs out of gas on a level road 220 m from a gas station. The driver pushes the 1,220 kg car to the gas station. If a 160 N force is required to keep the car moving, how much work (in J)... more
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Physical Science Math Science Physics

11/13/20

Find the ratio of their speeds immediately afterward.
Two persons on ice skates stand face to face and then push each other away (see figure below). Their masses are 70 and 90 kg.Find the ratio of their speeds immediately afterward.
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Physical Science Math Science Physics

11/13/20

How much energy (in J) is stored in the spring under this circumstance?
A 38 kg child uses a pogo stick to bounce up and down. The spring constant, k, of the toy equals 9,300 N/m.How much energy (in J) is stored in the spring under this circumstance?
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Physical Science Math Science Physics

11/12/20

How high (in m) will the swing be at the high point?
A child on a swing has a speed of 3.7 m/s at the low point of the arc.
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Physical Science Math Science Physics

11/12/20

What is their kinetic energy?
A bicycle and rider going 14 m/s approach a hill. Their total mass is 57 kg.(a) What is their kinetic energy?(b) If the rider coasts up the hill without pedaling, how high above its starting level... more
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Physical Science Math Science Physics

11/12/20

What is the minimum speed that a thrown ball would need to just reach the ceiling?
The ceiling of an arena is 38 m above the floor. What is the minimum speed that a thrown ball would need to just reach the ceiling?
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Physical Science

11/12/20

Does a merry go round have a constant velocity?
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Physical Science Math Science Physics

11/12/20

How fast must the tackle be going before the collision for their speed afterward to be zero?
A running back with a mass of 96 kg and a speed of 7 m/s collides with, and is held by, a 144-kg defensive tackle going in the opposite direction. How fast must the tackle be going before the... more
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Physical Science Math Science Physics

11/12/20

What was the original speed of the clay (in m/s)?
A pitcher throws a 0.70 kg ball of clay at a 3.0 kg block of wood. The clay sticks to the wood on impact, and their joint velocity afterward is 1.1 m/s. What was the original speed of the clay (in... more
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