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Problem: Julie drives 100 miles to grandmother's house. On the grandmothers, Julie drives half the distance at 40 mph and half the distance at 85 mph.
Part A- What is Julie's average speed on the way to grandma's house?
Rework your solution from the beginning and check each step carefully to find the average speed of Julie's.
A small plastic sphere charged to -10nC in held 1.0 cm above small glass bead at rest on a table. What is the maximum charge can the bead have without leaping up
Consider an electron in the ground state of the hydrogen atom, separated from the proton by a distance of 0.0529 nm. Viewing the electron as a satellite orbiting the proton in the electrostatic potential, calculate the speed of the electron in its ..
A 515 gram ball swings in a vertical circle at the end of a 2.9 meter long string. Find the speed of the ball at that point
At the local grocery store, you push a 14.7-kg shopping cart. You stop for a moment to add a bag of dog food to your cart. With a force of 12.0 N, you now accelerate the cart from rest through a distance of 2.14 m in 3.00 s. What was the mass of the ..
Tarzan is in the path of a pack of stampeding elephants when Jane swings in to the rescue on a rope vine, hauling him off to safety. The length of the vine 25 m, and Jane starts her swing by the rope horizontal. If Jane's mass is 54kg, and Tarzan's..
a light spring having a force constant of 149is used to pull a 7.50 sled on a horizontal ice rink. the coefficient of
a spring with k=128 Nm is compressed to a distance 2.0 pastequillibrium and is used to project a ball with mass = 4 kgdirectly up. What is muzzle velocity when the spring reaches equillibrium
A 0.271 kg bead slides on a curved wire, starting from rest at point A as shown in the figure. The acceleration of gravity is 9.8 m/s2 . If the wire is frictionless, find the speed of the bead at B. Find the speed of the bead at C. A5.58 m B C1.09 m
As you travel every day to campus, the road makes a large turn thatis approximately an arc of a circle. What is the maximum safe speed forthe turn when the road is wet
two gliders on a level air track approach each other. One glider has a mass m1= 0.6 kg and a velocity v1= +4 m/s. Calculate the velocity of the joined gliders
The specific heat of ethanol is 2.44 J/g·°C. How various kilojoules of energy are required to heat 50.0 g of ethanol from -20.0°C to 68.0°C.How far last car travel before momentarily coming to rest.
A series RLC circuit contains 4.2 Ω resistors, a 42 mH inductor and a 22 µF capacitor. Obtain what is the total impedance (Z) of the circuit
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