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Two large, parallel, conducting plates are 12 cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electrostatic force of 3.5 x 10-15 N acts on an electron pla
The mass of the ball is 2 kg while each piece of string is 125 cm long. The pole is 2 m high. The tension in the first (top) string is 80 N. A) Find the tension in the other string.
(a) the time constant of the circuit 2.1e-3 s (b) the maximum charge on the capacitor Your response differs from the correct answer by more than 10%. Double check your calculations. µC (c) the
You buy a plastic dart gun, and being a clever physics student you decide to do a quick calculation to find its maximum horizontal range. You shoot the gun straight up, and it takes 4.6s for the dar
A 0.1 g honeybee acquires a charge of 20 pC while flying. The electric field near the surface of the earth is typically 100 N/C , directed downward. What is the ratio of the electric force on the be
An object is hanging by a string from the ceiling of an elevator. The elevator is moving upward with a constant speed. What is the magnitude of the tension in the string? A)The magnitude of the tens
What is the angular separation between the red and violet components of the spectrum that emerges from the glass?
The core of an optical fiber has an index of refraction of 1.27, while the index of refraction of the cladding surrounding the core is 1.17. What is the critical angle for total internal reflection
Light rays in a material with index of refrection 1.31 can undergo total internal reflection when they strike the interface with another material at a critical angle of incidence. Find this material
A light beam is traveling through an unknown substance. When it exits that substance and goes into air, the angle of reflection is 33.0° and the angle of refraction is 50.0°. What is the in
You send a beam of light from a material with index of refraction 1.23 into an unkown material. In order to help identify this material, you determine its index of refraction by measuring the angles
A light ray propagates in a material with index of refraction 1.21, strikes an interface, and passes into a material whose index of refraction is 1.35. The angle of incidence at the interface is 42.
The ray from the laser strikes the mirror 35.5 cm from the wall, and the reflected ray strikes the wall 37.5 cm above the mirror. Find the angle of incidence of the laser ray on the mirror.
Four point charges have the same magnitude of 3.2 × 10-12 C and are fixed to the corners of a square that is 6.8 cm on a side. Three of the charges are positive and one is negative. Determine
Determine the density of an unknown gas used to fill a 2.0g balloon to a volume of 4.0L if the balloon floats at equilibrium of the air.
A moth at about eye level is 12 cm in front of a plane mirror; you are behind the moth, 34 cm from the mirror. What is the distance between your eyes and the apparent position of the moth's image i
A 28kg suitcase is being pulled with constant speed by a handle that is at an angle of 30^\circ above the horizontal. If the normal force exerted on the suitcase is 180N , what is the force {F} appl
An elevator (cabin mass 530 kg) is designed for a maximum load of 3300 kg, and to reach a velocity of 3.5 m/s in 3 s. For this scenario, what is the tension the elevator rope has to withstand?
To suck lemonade of density 986 kg/m3 up a straw to a maximum height of 3.82 cm, what minimum gauge pressure (in atmospheres) must you produce in your lungs?
The starter motor of a car engine draws a current of 170A from the battery. The copper wire to the motor is 4.0mm in diameter and 1.2m long. The starter motor runs for 0.90s until the car engine sta
A concave mirror used by a person who is shaving or applying makeup creates a virtual image of the face that is 1.50 times larger than the person's actual face when the face is 12.0 cm from the mirr
Use ray tracing to find the position of its lamp when the patient is positioned 1.1 m from the mirror (you'll need a careful drawing to get a good answer).
Suppose he looks at a 11-cm-long pencil held vertically 1.0 m from his glasses. Use ray tracing to determine the location and height of the image.
(a) What is the radius R of curvature of the convex surface of the lens? Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step care