11/24/20

What is the velocity in miles per hour?
The "Niagara Falls" water slide to waterpark and has a height of 76.0 feet (23.2 meters). Because the slide is not completely vertical the total length of the slide is 90.0 feet (27.4 meters). A... more
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11/23/20

How high above the water is the diver after 3 seconds?
A diver jumps off a diving board. The diver's height above the water, in meters, is represented by the function , where t is the number of seconds since the diver jumped. How high above the water... more
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11/23/20

What is the speed of the vehicle and truck together after crash?
A 1920 kg vehicle going with a speed of 27 m/s collides with the back of 2490 kg truck. The vehicles lock guards.a) What is the speed of the vehicle and truck together after crash? (accepting 100%... more
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11/20/20

Find the acceleration of the box
A student named Alex moves a box of dead cats down the hall by pulling a rope that is attached to the box. Alex pulls with a force of 155N at an angle of 35 degrees above the horizontal. The box... more
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11/20/20

What is the average difference in the air pressure between the top and bottom of the wing?
The wing of an airplane has an average cross-sectional area of 11 m2 and experiences a lift force of 72,000 N. What is the average difference in the air pressure between the top and bottom of the... more
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11/19/20

During a constant pressure expansion, the sign of the temperature change
is positiveis negativeis irrelevant because the temperature stays constantdepends on other factorsthose are the choices given, please help me! thank you.
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11/19/20

The pressure in a gas is 1000 Pa, and its volume changes from 1 cubic meter to 2 cubic meters. The work done on the gas
is positiveis negativeis zerorequires more informationThose are the choices, please help! thank you.
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11/19/20

A ball with an initial velocity of 2 m/s rolls for a period of 3 seconds. If the ball is uniformly accelerating at a rate of 3 m/s2, what will be the ball’s final velocity?
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11/19/20

Physics Momentum and Impulse
What is the impulse of an object Whose momentum went from 300kg*m/s to 3000 kg*m/swhat is the net force on an object when the impulse is 198,000kg*m/s for 3600 seconds
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11/19/20

physics question
A baseball player throws a ball with an initial velocity of 20m/s at 40º above horizontal. What is the vertical component of the ball's initial velocity? (Answer with three significant digits and... more
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11/19/20

Find the angle 𝜃 (in radians) between the vectors. (Round your answer to two decimal places.) u = −3i − 2j v = −8i + 9j
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11/18/20

how do I solve this?
In a right triangle, the measure of one acute angle is 2 times the sum of the measure of the other acute angle and 6. Find the measure of each acute angle.
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11/18/20

I need help with question
The surface of the earth is 70% water. If the diameter of the earth is 8,000 miles, how many square miles of the earth are covered by land.
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11/17/20

algebra 2 question check description

The repulsive force f between the north poles of two magnets is inversely proportional to the square of the distance d between them. If the repulsive force is 21 lb when the distance is 6 in., find... more
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11/17/20

need help in math class?
The path of a ball being thrown straight up in the air is given byy = −5t^2 + 14t + 3 where t is the time in seconds that the ball is in the air and y is the height(in meters). What is the maximum... more
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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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11/16/20

The ratio of the measure of <A to the measure of <B is 3:2. Find the measure of <A
Here is the picture of the Triangle, just incase you need this to help you, help me! I do not know where to put the image,
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11/16/20

Statics and Pulleys
Consider the 653 N weight held by two cables shown below. The left-hand cable had tension T2 and makes an angle of 35◦ with the ceiling. The right-hand cable had tension T1 and makes an angle of... more
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11/16/20

in triangle QPL the measurement of Q is five times the measurement of P and the measurement of L is 12 more than twice the measurement of P
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11/16/20

Sin[ArcCsc(5/4)]
Use Principal Values to evaluate. Show all work.How do I make the graph that goes along with this?
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11/15/20

Sound Physics multiple choice question
The intensity of a sound wave does NOT directly depend on which of the following?A. The height above groundB. The density of the medium through which the sound is travelingC. The speed of sound in... more
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11/14/20

finding speed of bullet using work energy theorem

A bullet of mass 0.0385 kg is fired toward board with a thickness of 0.0225 m. Its speed is 375 m/s before making contact with the board and it passes through the board. The average force exerted... more
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11/14/20

Physics question
Water has a specific heat of 1.0 cal/gC. How much energy is needed to raise the temperature of 100g to 10C? 10 cal 100 cal1000 cal 10000 cal
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11/13/20

pls help!! finding height by applying work energy theorem
  A block is released from rest at point A and slides down a curved slope to point B, then continues until it comes to rest at point C. There is no friction from point A to point B, but there is... more
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11/13/20

How would I do this?
5. The density of air under normal conditions is about 1.2 kg/m3. For a wind speed of 10 m/s, find (a) the actual power carried in the wind; (b) the maximum power (Betz limit)... more
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