11/13/20

Statics question about friction on inclined
A body of weight (W) is placed on a rough inclined plane makes with the horizontal an angle of measure θ and the force of magnitude (W) acts on it in direction of the line of greatest slope of the... more
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11/13/20

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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11/12/20

Jake pulls a couch of mass 38 kg across his apartment. He pulls on the couch at an angle of 25 degrees. with a force of 300 N.

Jake pulls a couch of mass 38 kg across his apartment. He pulls on the couch at an angle of 25 degrees. with a force of 300 N. The free-body diagram is shown below. What is the x-component of his... more
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11/12/20

A scientist is taking temperature measurements at different elevations on Mt. Everest.

The temperature at base camp is 22℃. The scientist observes that the temperature decreases by 5℃ every 1000 meters.A student writes a mathematical model for the temperature-elevation... more
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11/11/20

Waves Physics Question
A string with a linear mass density of 12.9 g/m is held at a tension of 92.1 N. If the string is plucked, what would be the speed of propagation of the subsequent wave?
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11/11/20

Oscillations physics question
It's the year 2467 and you pilot your spaceship to a moon where the acceleration at the surface due to gravity has a magnitude of 2.75 m/s2. You have a penchant for antique pendulum clocks. If your... more
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11/11/20

Graph the line with slope 1/2 passing through the point (3,-1)
Graph the line with slope 1/2 passing through the point  (3,−1).
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11/11/20

what’s the distance between point L (3,5) and point M (7,9)
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11/11/20

What is the approximate magnitude of vector F?
Vectors  and  are shown in the coordinate plane.Vector  is given by  =  + What is the approximate magnitude of vector ? 8.0 13 10 16 19
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11/11/20

physics question ll
You are given a galvanometer with a resistance of Ω and a full scale deflection current of 8.02 mA. You use a resistor to convert this galvanometer into a voltmeter which is capable of reading a... more
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11/10/20

Calculating total fringes
Light that has a wave length of 686 nm is used to illuminate two glass plates at normal incidence. The plates are 26.7cm in length touching at one end are separated at the other end by a wire that... more
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11/10/20

Calculating total fringes on a plate
Light that has a wave length of 686 nm is used to illuminate two glass plates at normal incidence. The plates are 26.7cm in length touching at one end are separated at the other end by a wire that... more
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11/10/20

Calculate the mean kinetic energy of the molecules of an ideal gas at temperatures: - 50 ° C,0 ° C and 1000 ° C
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11/07/20

 What is the net force on the motorcycle?
A motorcycle and rider have a total mass equal to 375 kg. The rider applies the brakes, causing the motorcycle to accelerate at a rate of −6 m/s2. What is the net force on the motorcycle? (Indicate... more
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11/07/20

Find the elephant's weight in newtons.
The mass of a certain elephant is 5,567 kg.Find the elephant's weight in newtons.Find its weight in pounds.
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11/07/20

Physics Problem Solving
A meter stick sits balanced on a fulcrum, placed at the 40cm mark with a weight (W) placed at the 10cm mark. What is the weight of the meter stick?
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11/06/20

A high-speed train in Japan travels a distance of 300. kilometers due west to final station and then goes east for 100 kilometres. If the total time of travel is 1.75 hours.

What is the average speed of this train? What is the average velocity of the train?
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11/06/20

What value does the scientist get this time, in m, to the nearest m?
A Trade Federation spacecraft flies past the planet Naboo at a speed of 0.69c and a scientist on Naboo measures the length of the moving spacecraft to be 78m. Later, the spacecraft lands on Naboo,... more
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11/05/20

John pushes his 1200 kg car from behind with 400 N of force. The coefficient of the rolling friction is 0.03. If he started from rest, how fast is the car going after 30 s of pushing?
John pushes his 1200 kg car from behind with 400 N of force. The coefficient of the rolling friction is 0.03. If he started from rest, how fast is the car going after 30 s of pushing?
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11/05/20

Please explain in the simplest terms how to solve the following: (in the description)
If x1,x2 are the roots of the equation x2 + 5x - 3 = 0, determine the value of x1 + x2.
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11/04/20

Wave motion multiple choice physics question
Which of the following best describes the intensity?A. A vector quantity with units of W.B. A vector quantity with units of W/m2C. A scalar quantity with units of W/m2D. A scalar quantity with... more
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11/04/20

Calculating distance

An astronaut on a spacewalk outside a spaceship with a mass of 3.16x108 kg far from any other massive bodies leaves a wrench floating outside the ship. The wrench feels an acceleration of 6.43x10-7... more
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11/04/20

What is the value of y when x=9
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11/04/20

The function g is defined by = g(x)=3x+7/x-6
Find g(4x)=
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11/03/20

Parallel and Perpendicular Lines
Write an equation of the line (in slope-intercept form) that is perpendicular to the line 2x+5y=-15 and contains the point (-8,3). 
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