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An experimental rocket car starting from rest reaches speed of 560 km/h after a straight 400-m run on a level salt flat. Assuming that acceleration is constant, (a) what was time of the run and, (b) what is the magnitude of the acceleration?
An object is thrown upwards with a speed of 14 m/s. How high above the projection point does it reach
When red light in a vacuum is incident at the Brewster angle on a certain type of glass, the angle of refraction is 30.0°. What are the Brewster angle
two force vectors act on an object i 60.0 newton at 45.0deg north of east and ii 25.0 newton at 30.0deg south of east.
Consider a generator with a 350 turn coil on its armature and a uniform magnetic field of 5.4 T. how fast do we need to rotate the coil
a 1.00-kg mass m1 on a frictionless inclined surface is connected to a 2.00-kg mass m2.the pulley is massless and
In a certain automobile engine with an efficiency of 20.1%, combustion of gasoline in one cylinder releases 520 J of heat. Find the total mechanical power produced by all four cylinders, operating at 55 cycles/s, or 3300 rpm
If the two balls started rolling at the same time at a point 1.2 m behind the edge of the table, will they reach the floor at the same time? define.
Under ambient conditions (T=300K ), the intrinsic electron concentration of silicon (Si) is ni=1.45*10^10cm^-3. Calculate the band gap energy of the semiconductor
A rectangular loop is made up of 50 turns of wire and has dimensions of 45 x 55 cm. It is located in a uniform 2 T magnetic field. Over a time of 0.3 s, Calculate the average emf induced in the coil
A 0.954 kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC motor. What is the average current supplied to the car's motor
Cobalt has a density of 8.9 g/cm3 and molecular mass of 58.9 g/mol. Calculate the magnetic moment of a cobalt atom in Bohr magnetons
a basketball player makes a jump shot. the 0.600 kg ball is released at a height of 2.00 m above the floor with a speed
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