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What is the average force provided by a crash pad that stops a 70.0 kg athlete who hits the pad at 10.0 m/s if it takes 1.20 s to stop the athlete?
You drive north on a highway, then, without changingspeed, you round a curve and drive east. What is the changer of your velocity and your acceleration
q1. a horse races once around a circular track in a time of 118s with a speed of 17 ms. what is the radius of the
Suppose the velocity of a bug as a function of time is given by the following function between 0 and 2 s, Find the average speed of the bug for the whole two second trip
A converging lens has a focal length of 100.0 cm. A 12.0-cm-tall object is located 124.0 cm in front of this lens. find Is the image real or virtual
i magnetic field lines never have a beginning or an end. use this to explain why it is reasonable for the field of a
question1a hiker makes four straight-line walks a 20 km at 274o b 12km at 48onbspc 33 km at 150onbspd 30km at 20onbspin
An 85 kg linebacker is running at 8 m/s directly toward the sideline of a football field. Determine their common speed and direction immediately after they collide
The vertical displacement y(x,t) of a string stretched along the horizontal x-axis is given by y(x,t) = (6.00 mm) cos[(3.25 m-1)x - (7.22 rad/s)t]. What is the distance between adjacent crests of the wave
A migrating bird is initially flying south at 10 m/s. To avoid hitting a high-rise building, the bird veers and changes its velocity to 3 m/s east over a period of 2 s. What is the bird's average acceleration (magnitude and direction) during this ..
two particles with Q1=50uc and Q2=84uc are initially separated by a distance of 2.3m, what is the change in electric potential energy
A thin film of alcohol (n=1.36) lies on a flat glass plate(n=1.51). When monochromatic light, whose wavelength can bechanged, is incident normally, What is the minimum thickness of the film
700 g of an unknown metal powder at Thot = 78°C are dropped into a negligible heat capacity calorimeter containing 140 g of water at 11°C, Calculate the specific heat of the metal powder
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