04/27/20

Mirror and Lens
An object is positioned 26 cm from a spherical concave mirror of unknown focal length. The image that is formed is 60 cm from the mirror.If 60 cm corresponds to the positive image distance,... more
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04/27/20

Convex Mirror and Lens
A car’s convex rearview mirror has a radius of curvature equal to 15 m.What is the location of the image dI that is formed by an object that is 14 m from the mirror? Follow the sign convention.... more
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04/27/20

Convex Mirror Physics
A spherical convex mirror is placed at the end of a driveway on a corner with a limited view of oncoming traffic. The mirror has a radius of curvature of 1.85 m.Where will the image of a car that... more
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04/27/20

Mirrors and Lens
A 2.00-cm-tall object is 18.0 cm in front of a converging lens with a focal length of 34.0 cm.Calculate the image distance (dI) and image height (hI). Follow the sign convention
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04/23/20

A traffic light weighing 28 pounds is suspended by two wires as shown in the figure below. Find the magnitude |T1| of the tension in wire AC, and the magnitude |T2| of the tension in wire AB.

A traffic light weighing 28 pounds is suspended by two wires as shown in the figure below. Find the magnitude |T1| of the tension in wire AC, and the magnitude |T2| of the tension in wire AB.... more
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04/21/20

You have a long pipe closed at one end and an electronic buzzer with which you can dial in different single frequency sounds.

When you hold the buzzer near the end of the pipe, transmitting sound down the pipe, you determine that standing waves are established at frequencies of 150, 250, and 350 Hz. The frequency of 150... more
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04/21/20

Physics Unpolarized Light
Unpolarized light is passed through an optical filter that is oriented in the vertical direction.If the incident intensity of the light is 38 W/m, what is the intensity of the light that emerges... more
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04/20/20

Physics Question
A demolition derby is a car-crashing contest. Suppose an 800-kg car moving at 20 m/s crashes into the back of and sticks to a 1,200-kg car moving at 10 m/s in the same direction What is the total... more
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04/16/20

Optics and magnification problems
1.An object is placed 0.22 m away from a concave lens and has a height of 0.08 m . The image produce is -0.03 m tall. Where is the image located?2.A 0.38 m tall object is placed 0.43 m from a... more
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04/09/20

A circular coil enclosing an area of 89.5 cm2 is made of 140 turns of copper wire as shown in the figure.

A circular coil enclosing an area of 89.5 cm2 is made of 140 turns of copper wire as shown in the figure. When viewed from the right the coil is wound counter-clockwise. A 7.6 Ω resistor is... more
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04/09/20

An airplane flies 80 km in a direction 50° east of north to a hub city, then 50 km in a direction 30° north of west, and then 30 km to the north to a final destination.what the magnitude and direction
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04/09/20

A 21-kg child starts from rest and slides down a slide that is 1.8 m high. At the bottom of the slide, the child is moving 0.56 m/s.
How much work, in joules, was done by the nonconservative force of friction on the child? 
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04/09/20

If the ramp makes an angle of 45 degrees with the ground, find the normal force, friction force, and the coefficient of friction between the box and the ramp.
A 100 kg box is sliding down a ramp with an acceleration of 3 m/s2. If the ramp makes an angle of 45 degrees with the ground, find the normal force, friction force, and the coefficient of friction... more
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03/25/20

I need help on a biomechanics assignment

A penny farthing bicycle has front and rear tires with diameters of 140 and 44cm, respectively. If each tire is rotated 180degrees counterclockwise, what is the magnitude of the linear distance... more
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02/10/20

Mutual gravitational attraction between two masses in space is 4,170 Newtons. What is the new gravitational force between these masses if the distance changes from 864 kilometers to 371 kilometers?
Need to find the new gravitational force when the distances given change.
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12/08/19

How far will the skier slide before coming to a stop ?
80-kg skier starts at rest at point A and skies down the slope on frictionless skies until they hit a rough patch on the flat ground after the 'bump'. Coefficient of kinetic friction = 0.5.
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09/20/19

Physics Problem
A cop car going 2 m/s is passed by a truck going 42 m/s which is above the speed limit. The cop accelerates at 4m/s2 to catch the truck. The trucks velocity remains constant.a. How much time does... more
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09/20/19

    Determine the initial velocity of the ball and give its horizontal and vertical components.
In a particular laboratory experiment, a spring gun placed on a table fires a steel ball horizontally outward. A student determines that the ball starts 1.0 m above the floor and travels... more
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08/27/19

physics question

A car is making a 58 mi trip.in the first half of the time its speed is 11.00 mph and in the second half of the time its speed is 36.00 mph. What is the total time in hours of the trip? Keep two... more
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07/29/19

What are some examples of things sound waves cannot pass through?
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06/04/19

Both ends of a tube are open the fundamental frequency is 300hz the next resonant frequency is

Please add equation and explanationa. 600hz b. 900 hzc. 1200 hz d. 1500 hz
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06/04/19

The 5th harmonic of a 300hz fundamental frequency is
Please explain and add equation a. 300h HZb. 500 HZc. 1000 HZ d. 1500 HZ
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06/02/19

Calculating semester exam grade.
If my final exam is worth 7% if my grade and I have an 89 in the class how much will that effect my grade, If I get an 80 on the final?
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05/28/19

A ray of light is incident at an angle of 36.4 on the surface of a piece of crown glass hose index of refraction is 1.52 what is the angle of refraction in units of °
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05/22/19

Find the potision on axis of dipole where distance between them is 10cm and charge on them is -5micro column and 5 micro coulmb and electric field is 0
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