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A swimmer, capable of swimming at a speed of 1.87 m/s in still water (i.e., the swimmer can swim with a speed of 1.87 m/s relative to the water), starts to swim directly across a 2.77-km-wide river. However, the current is 1.25 m/s, and it carries the swimmer downstream.
(a) How long does it take the swimmer to cross the river?
(b) How far downstream will the swimmer be upon reaching the other side of the river?
At rush hour, the noise from a highway is 10^?4W/m^2 with 100 cars passing a given point a minute. How many cars are now driving on the highway
For safety in climbing, a mountaineer uses a nylon rope that is 69 m long and 1.0 cm in diameter. Whilst supporting a 96-kg climber, the rope elongates 1.4 m. Find its Young's modulus.
An object has a kinetic energy of 313 J and the momentum of magnitude 24.1 kg·m/s. Find out the speed and the mass of the object.
A circular loop of wire has an area of 0.3 m2. It is tilted by 45° with respect to a uniform 0.40 T magnetic field. What is the magnetic flux through the loop
How much work must be completed to accelerate a baton from rest to an angular speed of 7.79 rad/s about its center? Consider the baton to be a uniform rod of length 0.596m and mass 0.495kg.
q1. assume you are 75 cm from a plane mirror. what area of the mirror is used to reflect the rays entering one eye from
A sign weighing 486 N is suspended at the end of a uniform rod 3.19 m long weighing 565 N. What is the tension in the support cable if it makes an angle of 33.0 deg with the support rod
Two trucks of equal mass collide at a 90 intersection. If the momentum of truck A is 9.50x10^4 kg km/h east and the momentum of B is 1.05x10^5 kg km/ north, what is the resulting momentum of the final mass
A transparent material has indices of refraction given by: n(violet) = 1.6231 n(red) = 1.6111 Determine the angular spread of these two colors
Define proton-proton chain efficiently
An automobile can be considered to be mounted on four identicalsprings as far as vertical oscillations are concerned. The springsof a certain car are adjusted so that the oscillations have afrequency of 2.62 Hz.
A force of 25.33 N is applied tangentially to a wheel of radius 0.340 m and gives rise to an angular acceleration of 1.20 rad/s^2
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