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A speedboat starts from rest and accelerates at +2.01 m/s2 for 7.00s. At the end of this time, the boatcontinues for an additional 6.00s with an acceleration of +0.518m/s2. Following this, the boat accelerates at -1.49m/s2 for 8.00s.
a) What is the velocity of the boat at t=21.0s?
b) Find the total displacement of the boat.
On average, each person in the industrialized world is responsible for the emission of 10,000 kg of carbon dioxide () every year. This includes that you generate directly, how long would each edge of the cube be
Compressed air is used to fire a 60 ball vertically upward from a 1.1--tall tube. The air exerts an upward force of 2.2 on the ball as long as it is in the tube. How high does the ball go above the top of the tube? Express your answer to two signific..
You have a 2.5m long copper wire. You want to make an N-turn current loop that generates a 1.2mT magnetic field at the center when the current is 1.9A, What will be the diameter of your coil
Three equal positive point charges of magnitude Q = 12.00%u03BC C are located at three corners of a square of edge length d = 11.1 cm. What is the magnitude of the attractive force on the negative charge
A spring oscillator is designed with a mass of 0.132 kg. It operates while immersed in a damping fluid, Find the required damping constant for the system
Your friend's 0.0185 kg graduation tassel hangs on a string from his rearview mirror. Find the tension in the string holding the tassel
Hakeem throws an 8.00 g ball straight down from a height of 2.0 m. The ball strikes the floor at a speed of 7.40 m/s. What was the initial speed of the ball? Assume that air resistance is negligible.
There are 50x10^6 homes in the US. Each home has one light bulb which runs one hour per day. all have 75watt light bulbs. How much energy per year do they use for lighting
35g of copper pellets are removed from a 300C oven and immediately dropped into 80ml of water at 24C in an insulated cup. What will the new water temperature be
After being accelerated through a potential difference of 5.42 kV, a singly charged carbon ion (12C) moves in a circle of radius 20.8 cm in the magnetic field of a mass spectrometer. What is the magnitude of the field
The figure below shows three charges at the corners of a rectangle of length x = 0.35 m and height y = 0.22 m. How much work must be done to move the three charges infinitely far from one another?
A scientist performing UN inspections finds evidence of an abandoned nuclear laboratory. A sample box in the lab reads "pure sample Strontium-90." How long ago was the sample created
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