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In the circuit shown in the figure below, e1=30.0V R1=7.00 Ω and R2=4.00 Ω.
a) Find the current in resistor R.
b) Find through resistance R.
c) find the unknown emf e.
d) if the circuit is broken at point x, what is the current in resistor R?
A boy is riding a bicycle, and its wheels have an angular velocity of 20.1 rad/s. Estimate what the angular acceleration of each wheel
A knob on a turning table rotates circularly with a constant speed of 0.78 m/s in a cirlce with radius= 0.35m. What is the maximum acceleration of the shadow
An 80-kg person hiking across a large, level plain in Zion National Park comes across a pair of large boulders. The hiker's guidebook says they have masses of 3.2 Mkg and 9 Mkg, respectively. The distance among their centers of mass is 100 meters.
A light ray in carbon tetrachloride isincident on sodium chloride at a5° angle ofincidence. Find the angle of refraction
A rifle bullet of mass m = 0.03 kg traveling at vb = 240 m/s collides with and embeds itself in a pendulum of mass M = 2.88 kg, How high does the pendulum-bullet combination rise after the collision
A clay vase on a potter's wheel experiences an angular acceleration of 8.21 rad/s2 due to the application of a 17.7-N m net torque. Find the total moment of inertia of the vase
Draw a curve of temperature versus time as 10 g of this metal are heated at a constant rate of 1W from 300 to 1200k.
q1. a sanding disk with rotational inertia 2.4 10-3 kgbullm2 is attached to an electric drill whose motor delivers a
A sample containing beryllium (atomic mass 9 u), aluminum (27 u), and an unknown element is placed in a mass spectrometer. What is the mass of the unknown element
An ideal monatomic gas at first has a temperature of 311K and a pressure of 7.57atm. It is to expand from volume 571 cm3 to volume 1390 cm3.
please provide step by step process for finding answers.1.a rail car of mass 4500 kg is moving with a velocity of 12.4
The wavelength of the laser beam used in a compact disc player is 780 nm. Estimate the spacing between the slits of the grating
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