02/16/20

PHYSICS QUESTION

An insulated beaker with negligible mass contains liquid water with a mass of 0.270  and a temperature of 82.6  .How much ice at a temperature of -24.0  must be dropped into the water so that the... more
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02/12/20

A 40 kg cannonball is fired from a cannon at an angle of 28° with an initial velocity of 30 m / s. How far from its initial position, in meters, does it land?
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02/12/20

A 40 kg cannonball is fired from a cannon at an angle of 28° with an initial velocity of 30 m / s. How long, in seconds, is it in the air for?
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02/11/20

What is the velocity
a 1.5 kg ball is moving at 8 m/s south, strikes a 2 kg ball moving at 3 m/s south. if the velocity of the 2 kg ball after the collision is 4.5 m/s south, what is the velocity of the 1.5 kg ball
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02/09/20

Physics question
Consider a 5.45 kg block that is dragged by a spring on a (relatively) frictionless horizontal surface at constant velocity. Suppose the block reaches a rough patch and the spring stretches... more
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02/09/20

Physics Help!!!!!
A 2.03 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.582 and the coefficient of kinetic friction is 0.316 . How much force... more
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02/08/20

Which equation will solve the following word problem?
Jose has a board that is 44 inches long. He wishes to cut it into two pieces so that one piece will be 6 inches longer than the other. How long should the shorter piece be?
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02/06/20

physics question
Albert pushes a 12 kg box across a level floor. He pushes with a force of 45 N and observes that the box accelerates in the direction of his push at a rate of 3 m / s 2 . What is the... more
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02/06/20

Physics Question
A hockey player uses her hockey stick to exert a force of 4.36 N on a stationary hockey puck, which is resting on a nearly frictionless ice surface. The hockey puck has a mass of 155 g. What is the... more
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02/06/20

An artillery shell is fired from a cliff 20.5 m above a valley with a velocity of 209 m/s at an angle of 30.5 degrees above the horizontal.

How many seconds after being fired does the shell reach its maximum height?
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02/03/20

The interactions of Matter
How many moles of  are required to create 9.54 liters of a 3.4 M solution?
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02/01/20

Its a multiple choice. A force of 3N and a force of 4N act on an object at the same time. Which of the following forces cannot be the resultant force on the object? A) 0.5N...B)3.5N...C)4N...D)5N..
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01/31/20

The sum of two numbers is 60. The larger number is 22 more than the smaller number. What are the numbers?
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11/18/19

Can you help me
The apparatus shown in the figure below was used by Joule to measure the mechanical equivalent of heat. Work is done on the water by a rotating paddle wheel, which is driven by two blocks falling... more
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11/18/19

PHysics Question
A certain steel railroad rail is 13 yd in length and weighs 77.4 lb/yd. How much thermal energy is required to increase the length of such a rail by 3.1 mm? Note: Assume the steel has the same... more
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10/17/19

Physics applying newtons laws
Link to the image: https://ibb.co/mJfSpVWI can't get the second question I have tried  (Step 1: F= Fg+Fm2) (Step 2: F=(54) +(5.4)(.53) = 56.862) (Step 3: x=56.862/sin12 = 273.291114) (Step 4:... more
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09/10/17

Would it be Vf?
d=Vi t 1/2 at^2 is independent of what variable? (1)a(2)Vi(3)Vf(4)d ** I understand that "t" is the independent variable. However, that's not what the question is asking. The question is asking... more
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03/30/16

How many grams of talc should be use to prepare 500g of an 8% w/w gel
phamarcy math 
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