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Two skiers, Annie and Jack, start skiing from rest at different points on a hill at the same time. Jack, with a mass 78.9 kg, skis from the top of the hill down a steeper section with an angle of inclination of 35.0o. Annie, with mass 68.9 kg, starts from a lower point and skis a less steep section, with an angle of inclination of 20.0o. The length of the steeper section is 100 m. Determine the acceleration of the combined center of mass for Annie and Jack before Jack reaches the less steep section.
ax=ay=
Draw a circuit diagram of two 50 Ohm resistors identical lightbulbs in series across a power supply providing 12V. Use theequivalent resistance, Rs, of the two bulbs in series to find thecurrent flowing through the circuit. From current, calculate th..
Blood is conductive enough that it can be treated as a moving conductor. what is the magnitude of the voltage that is measured with the electrodes in the drawing
A conductive loop of radius r = 1.0 cm falls towards a stationary solenoid of 100 turns per cm carrying a current of I = 2.00 A. What is the direction of the current induced in the loop
A 3.00 gram lead bullet is moving at 180. m/s andenters a bag of sand and stops. By what amount does the temperature of the bullet change if all its kinetic energy becomes thermal energy.
The intensity of the sound wave from a jet airplane as it is taking off is 114 W/m2 at a distance of 4.3 m. What is the intensity of the sound wave
consider an electron in a 1-d box of length 258 pm.a. what is the zpe in j per electron? in kjmole?b. where would the
A beam of 8.61 MeV protons is incident on a target of 2713Al. Those protons that collide produce the reaction shown below. determine the kinetic energy of the emerging neutrons
a stationary billiard ball mass 0.17 kg is struck by an identical ball moving at 3.0 ms. after the collision the second
A particle with a mass of 2.5 × 10-5 kilogram and a charge of +2.8 µC is released in a (parallel plate) uniform horizontal electric field of 11 N/C. Find how far horizontally does the particle travel in 0.60 sec
Water has a mass per mole of 18g/mol, and each water molecule (H2O) has 10 electrons.
A cord of length 1.0m is fixed at both ends. Its mass per unit length is 1.2g/m and the tension is 11N. What is the frequency of fundamental oscillation
The earth is nearly three times the distance from the sun as the planet Mercury. How many times more intense is the intensity of the light from the sun at the earth compared to Mercury?
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