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Two blocks of masses 20 kg and 8.0 kg are connected togetherby a light string and rest on a frictionless level surface. Attached to the 8-kg mass is a second light string, which a personuses to pull both blocks horizontally. If the two blocks systemacdereates at 0.5 m/s2, what is the tension in the second string attached to the 8-kg mass?
Each of the sources in the drawing emits a frequency of 4.57 multiplied by 1014 Hz, and the speed v is 2.50 106 m/s. Calculate the observed frequency fo in situation A. fo = ? UNIT?
Transvers waves: Speed of wave on streatched string. Two steel wires are stretched with the same tension. The first wire has a diameter of 0.610 mm and the second wire has a diameter of 0.910 mm
Conclude a rough "scale factor" or "plate scale." Measure the distances in mm or cm between each of the marked wavelengths and average the results.
A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of the water while a large ball requires a lot of force. calculate the diameter of the ball
A proton a neutron and an alfa particle accelerated through the same potential difference enter a region of uniform magnetic field moving at right angles to B.(a) Compare their kinetic energies.(b) if the radius of the proton’s circular path is 10 cm..
Two point particles of charge Q1 = 46 µC and Q2 = 81 µC are found to have a potential energy of 43 J. What is the distance between the charges
The average power used by a stereo speaker is 56 W. Assuming that the speaker can be treated as a 7.7- resistance, find the peak value of the ac voltage applied to the speaker
It is 155cm from your eyes to your toes. You're standing 190cm in front of the tall mirror. How far is it from your eyes to the image of your toes.
One runner covered the 100-m dash in 10.9 s. Another runner came in second at a time of 11.4 s, determine the separation between the two runners when the winner crossed the finish line
a balloon contains 4.20 moles of a monatomic ideal gas. As energy is added to the system by heat, find work Wenv done by the gas in expanding the balloon
the cube is 20.0 cm on each edge. Four straight segments of wire-ab,bc,cd, andda-form a closed loop that carries a currentI=5.00A in the direction shown, Determine the magnetic force on each segment
A series RLC circuit has R = 35 ohms, L = 2.7 microhenries, and C = 52 nanofarads. what is the average power dissipated by the circuit
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