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You use your 8 binoculars to focus on a yellow-rumped warbler (length 14 cm ) in a tree 18 m away from you. What angle (in degrees) does the image of the warbler subtend on your retina?
A hot iron horseshoe (mass = 0.470 kg), just forged, is dropped into 1.44 L of water in a 0.340 kg iron pot initially at 19.1°C. calculate the initial temperature of the hot horseshoe
A novice skier, starting from rest, slides down a frictionless 34° incline whose vertical height is 128 m. How fast is she going when she reaches the bottom.
A proton moving at 5.0 × 104 m/s horizontally enters a region where a magnetic field of 0.12 T is present, What magnitude force acts on the proton
An electron in the hydrogen atom makes a drop from n = 3 to m = 2. What wavelength of photon is emitted
The max wavelength of light, which emits electrons is 460 nm. Calculate work function of sodium
A student is ice fishing in Colorado on a frozen lake over spring break. Find the mass of ice cut out to make the hole
Two identical spacecraft are to be accelerated by rockets. The first rocket fires with a force 4 times as large as that of the second rocket. The acceleration of the first rocket is how many times as vast as the acceleration of the second rocket.
A laser beam is incident at an angle of 29.2° to the vertical onto a solution of corn syrup in water. what is the index of refraction of the syrup solution
A bead of mass m = 6.90 kg is released from point A and slides on the frictionless track as shown in the figure below. The height of A is ha = 6.10 m. Determine the bead's speed at points B and C
Two stretched cables both experience the same stress. The first cable has a radius of 3.1 times 10-3 m, and is subject to a stretching force of 230 N. The radius of the second cable is 4.6 times 10-3 m. Determine the stretching force on the second ca..
In the quark model of fundamental particles, a proton is composed of three quarks: two "up" quarks, each having charge +2e/3, calculate the potential energy of the subsystem of two "up" quarks
Threshold freq. of metal isf0. When the light of freq. 2f0 is incident on the metal max velocity of electrons is v1 and v2
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