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The place you get your hair cut has two nearly parallel mirrors 7.00 apart. As you sit between these mirrors in the chair, your head is 2.50 from the mirror in front of you. Looking toward this mirror, you first see your face and then, farther away, the back of your head. Side note: The mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem. Neglect the thickness of your head.
1. How far away does the back of your head appear to be? (from you)
a system of 1435 particles, each of which is either an electron or a proton , has a net charge of -7.216x10^-17, how many electrons are in this sytem
An air conditioner operating between 97F and 72F is rated at 3900 Btu/h cooling capacity. What horsepower is required of the air conditioner motor
A pion has a rest energy of 135MeV. It decays into two gamma rays, bursts of electromagnetic radiation that travel at the speed of light. find the energies of the two gamma rays
Three people pull simultaneously on a stubborn donkey. Jack pulls eastward with a force of 83.7 N, Jill pulls with 91.9 N in the northeast direction, Find the magnitude of the net force the people exert on the donkey
A space probe is launched from Earth, headed for deep space. At a distance of 15,000 miles from the Earth's center, What is the size of the force when it is at 30,000 miles from the Earth's center
A person of mass 72 stands at the center of a rotating merry-go-round platform of radius 3.40 and moment of inertia 950. The platform rotates without friction with the angular velocity 0.95. The person walks radially to the edge of the platform.
A 4kg pumpkin is sitting stationary on a platform. What is the total energy of the pumpkin measured by a person standing on the platform
You are given an ideal air-filled parallel plate capacitor with plates of area 45.0 cm2 and separation 2.10 mm. What is the new value of the capacitance
A 2 kg car moving towards the right at 4 m/s collides head on with an 8 kg car moving towards the left at 2 m/s, After the collision, the velocity of the combined bodies is
A particular fish tank filled with fresh water (n = 1.33) has a coral reef sticker stuck to an exterior wall, What is the index of refraction of the tank's walls
A wire carrying a current of 2.10 A is bent into the shape of a square loop of side length 5.92 cm and is placed in the xy-plane. What is the torque on the wire loop
If a person radiates about 65.00 W of power at room temperature, how long does it take for a person to radiate away the energy acquired by consuming a 230 Calorie donut.
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