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Q. How many 65W light bulbs can be connected in parallel across a potential difference of 85 V before the total current in the circuit exceeds 2.10A?
Q. A person exerts a horizontal force of 162N in the test apparatus. (h = 0.31 m.) Find out the horizontal force that his flexor muscle exerts on his forearm.
A spring of constant 3.00 x 10^4 N/m is between a rigid beam and the output piston of a hydraulic lever. An empty container with negligible mass sits on the input piston. The input piston has Areai and output piston has area 18 A.
What is the charge density on the surface. suppose that air resistance can be neglected.
Estimate, from these data, the effective distance between the atoms.
A 56.0 kg person jumps from rest off the 9.0 m high tower straight down into the water. Neglect air resistance throughout the descent. She comes to rest 3.40 m under the surface of the water. Find out the magnitude of the average force that the water..
The two 10-cm-long parallel wires are divided by 5.0 mm. For what value of the resistor will the force between the two wires be 1.08×10-4 N.
On a cool morning, when the temperature is 16.0 ^circC, you measure the pressure in your car tires to be 20.0 psi. After driving 30.0mi on the freeway, temperature of your tires is 51.0 ^circC.
A parallel beam of light from a He-Ne laser, with wavelength of 644 nm, falls on two very narrow slits 0.05 mm apart. How far apart are the fringes in the center of the pattern on a screen 2.2m away.
The coefficient of static friction between the block and table's surface is &mu s = 1/3. The mass of the block that is hanging down is n1 Kg. The tangent of the angle shown in the figure is tan & theta = n2. What is the minimum value of mass, n3 Kg t..
imagine that each person is about the same distance from the center of the field and can generate the same level of sound intensity. How many people are at game.
David is driving a steady 25 m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.8 m/s^2 at the instant when David passes.
Discover new angles with respect to the x-axis
What is the shortest height a plane mirror must be so that a person who is 1.6 meters tall is able to see his or her whole body? plan a ray diagram to support your answer.
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