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In a women's 100-m race, accelerating uniformly, Laura takes 1.98 s and Healan 3.17 s to attain their maximum speeds, which they each maintain for the rest of the race. They cross the finish line simultaneously, both setting a world record of 10.4 s.
What is the maximum distance by which Healan is behind Laura? m
At what time does that occur?
An interstate highway has been built through a neighborhood in a city. In the afternoon, the sound level in an apartment in the neighborhood is 95.0 dB as 105 cars pass outside the window every minute. Late at night, the traffic flow is only six c..
he first person is initially moving forward with a speed of 2.50 m/s, and the second person is initially at rest. Illustrate what are the velocities of the two people after the snowball is exchanged? Disregard the friction between the skates and ..
A spotlight is coated so that it won't transmit magenta light from its white-hot filament. What colour emerges from coated spotlight.
A person walks first at a constant speed of 5.10 m/s along a straight line from point to point and then back along the line from to at a constant speed of 2.95 m/s. (a) What is her average speed over the entire trip? (b) What is her average veloci..
A horse is pulling a buggy. the total force by the horse is 475N applied horizontally. What is the force of friction on the driver and buggy
A counter with negligible background gives exactly 10,000 counts in a 1-s period when a standard source is in place. What is the counter dead time
The threshold of dark-adapted (scotopic) vision is 8.0 ? 10-11 W/m2 at a central wavelength of 450 nm. how many photons per second enter the eye
A wheel is spinning clockwise at a 10 revolutions per second at t = 0. Due to friction in the bearings supporting the axle, the wheel slows down, losing 0.500 revolutions per second in angular velocity each second, until it comes to rest.
Calculate the angular velocity? of an electron orbiting a proton in the hydrogen atom, given the radius of the orbit is 0.500x10-10 m . You may assume that the proton is stationary and the centripetal force is supplied by Coulomb attraction.
What are the components of the ships displacement
Consider an LR circuit like that displayed in Figure 6.6 in Activity 2-1 in your lab manual. You measure the current through the inductor as a function of time, What is the total resistance of the circuit
The dielectric in a capacitor serves two purposes. It increased the capacitance, compared to an otherwise identical capacitor with an air gap, What is the maximum energy that can be stored if the plates are separated by a 0.50-mm-thick Teflon sheet
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