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A train starts from rest and accelerates at a rate of 1.70m/sfor 13.8s it runs at constant speed for 69.9s andslows down at a rate of 3.48m/s until it stops, find total distance covered?
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.66 V, What emf and current are induced in the square coil
A helium balloon ride lifts up passengers in a basket. Assume the density of air is 1.28 kg/m3, find the volume of helium in the balloon when fully inflated
Elements that appear in the same column of the periodic table often share similar chemical properties. In the case of the alkaline earth metals, this is troublesome since the body treats calcium, calculate the path radius of the Ca ion
Particle A andparticle B are held together with a compressed springbetween them. When they are released, the spring pushes them apart,and they then fly off in opposite directions, what are the kinetic energies of each particle
A swift blow with the hand can break a pine board. As the hand hits the board, the kinetic energy of the hand is transformed into elastic potential energy of the bending board, what is the average force on the hand
What is the frequency of ultrasound in a medium if he wave length is 3.0 x 10^-3 m and velocity is 1300 mm/ms.
A bat moving at 3.4 m/s is chasing a flying insect. The bat emits a 49 kHz chirp and receives back an echo at 49.44 kHz. At what speed is the bat gaining on its prey
The inside of the cylindrical can shown above has cross-sectional area 0.005 m^2 and length 0.15 m. The can is filled with an ideal gas and covered with the loose cap. The gas is heated to 363K and some is allowed to escape from the can so that re..
Assume Rutherford used an alpha particle with a kinetic energy of 5.25MeV and fired them into a sheet of aluminum, one atom thick. Determine the minimum radius of approach
Monochromatic light shines on a diffraction grating. When the light source and the grating are in air, At what angle does the first-order maximum occur when the source and the grating are immersed in water (n = 1.32)
q1. two stationary positive point charges charge 1 of magnitude 355 nc and charge 2 of magnitude 1.8 nc are separated
A 14kg projectile is launched at 380m/s at a 55 (degrees) angle to the horizontal. At the peak of its trajectory it collides with a second projectile moving horizontally, in the opposite direction, at 140m/s . The two stick together and land 9.8km ho..
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