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A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.875 rad/s. You, with a mass of 72.3 kg, walk clockwise around the platform along its edge at the speed of 1.07 m/s with respect to the platform. Your 20.7-kg poodle also walks clockwise around the platform, but along a circle at half the platform\'s radius and at half your linear speed with respect to the platform. Your 19.1-kg mutt, on the other hand, sits still on the platform at a position that is 3/4 of the platform\'s radius from the center. Model the platform as a uniform disk with mass 93.1 kg and radius 1.83 m. Calculate the total angular momentum of the system.
The distance between the first and fifth minimum on a screen 60 cm behind the slits is 6.0 mm. What is the wavelength of the light used in this experiment.
A car travels north at 28.9 m/s for 14.3 min. It then travels south at 40.1 m/s for 28.5 min. a) What is the total distance the car travels? b) What is the displacement of the car?
A balloon with a radius of 14cm and an electric charge of 3.75x10^-9 C is brought within the electric field of the larger balloon so their centres are 40cm apart. find the magnitude of the electric force exerted by this electric field on the small..
The bullet penetrates into the block and stops due to its friction with the block. The compound system of the block plus the bullet rises to a height of 11 cm along a circular arc with a 20 cm radius A bullet with a m1 = 30.0 g mass is fired horizont..
Racing drivers like to warm up the tyres of their car as soon as possible. One reason is that warm tyres grip the road better but the temperature also affects the pressure of the air into he tyres.
A 2.40kg mass is pushed against a horizontal spring of force constant 26.0N/cm on a frictionless air table. The spring is attached to the tabletop, Find the greatest speed the mass reaches
A 1350 kg car accelerates uniformly from 35.5 km/h to 75.5 km/h over 250 m. Determine the time taken for the car to accelerate
A projectile is fired at an upward angle of 50° from the top of a 145m cliff with a speed of 195 m/s. What will be its speed while it strikes the ground below? (Use conservation of energy.)
A little cat, Bella, walks in a straight line, which we shall call the x axis, with positive direction to the right. As an observant scientist, you make measurements of her motion and construct a graph of the little feline's velocity as a function..
When the cannon is fired, the ball moves 15.3 cm through the horizontal barrel of the cannon, and there is a constant frictional force of 0.0322 N between the barrel and the ball. Illustrate at what point does it have its max speed?
A high-voltage transmission line with a resistance of 0.335 ?/km carries a current of 1.45 kA, What fraction of the transmitted power does this loss represent
When some stars use up their fuel, they undergo a catastrophic explosion called a supernova. This explosion blows much or all of a star's mass outward, in the form of a rapidly expanding spherical shell.
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