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Four objects are situated along the y axis as follows: a 2.07 kilogram object is at +2.92 meter, a 2.91 kilogram object is at +2.56 meter, a 2.41 kilogram object is at the origin, and a 3.99 kilogram object is at -0.503 meter. Find where is the center of mass of these objects?
How long would it take her to reach the bottom of the hill, assuming she starts from rest and accelerates uniformly, if the elevation change is 324.
a 2.0 meter long string that has a mass of 24.0 grams is under 45 n of tension. a sinusoidal wave with an amplitude
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 ..
jupiters moon io is has an orbital radius of 421000 km around the planet jupiter mj 1.9 x 1027 kg. this means
A person in the air above the water in a swimming pool looks straight down into the water (n = 1.33) at a diamond ring that lies on the bottom of the pool. what is the depth of the water
A 0.145 kilogram baseball pitched at 39.0 m/s is hit on a horizontal line drive straight back toward the pitcher at 52.0 m/s. find the average force between the ball and bat during contact
The motor of a ski boat generates an average power of 7.70 104 W when the boat is moving at aconstant speed of 15 m/s. When the boat is pulling a skier at the same speed, the engine must generatean average power of 8.70 104 W.
A ball of mass 1.5 kg is thrown upward. It leaves the thrower's hand with a velocity of 10 m/s. After the ball hits the thrower's hand, it comes to rest in a time of .25s. Define is the net impulse exerted on the ball?
Based on this information and what you learned in this chapter about the action potential, estimate the total number of sodium ion channels in the membrane of a nerve cell
An inflated rubber balloon is rubbed with the wool cloth until an excess of 1.50 multiplied by 109 electrons is on the balloon. What is the magnitude of the charge on the balloon.
A 3600-Ω resistor and a 1.1-µF capacitor are connected in series acrossa generator (60.0 Hz, 120 V rms). Determine the average powerdelivered to the circuit.
Tetchnetium is a radioactive isotope that emits a gamma ray with a half life of 6 hours. what fraction of the original dose remains in the body 24 hours after preparation
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