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The position of a moving particle along the x axis is given by: x = (21 + 22t-6.0t2) m, where t is the time in seconds. What is the average velocity during the interval from t = 1.0 s to t = 3.0 s?
a student pulls a 5kg object along a horizontal surface at a constant speed of 2m/s by a 15N force acting 30 degrees above the horizontal
The cylindrical beam of a 80.0 mW laser is 0.80 cm in diameter. What is the rms value of the electric field
At launch, the space shuttle's engines offer a thrust of 29 x 10^6N, and it accelerates upward at 1.75 m/s^2. What is the shuttle's mass.
A water balloon is fired at 34.0 m/s from a water cannon, which is aimed at an angle of 18° above the ground. The centre of the cannon's target
A jar of water is boiling under one atmosphere of pressure. Suppose that heat enters the jar only through its bottom, Find the temperature of the heating element in contact with the jar
She counts the number of revolutions to be 20 in 60 s. What is the angular deceleration?
On a spacecraft, two engines are turned on for 991 second at a moment when the velocity of the craft has x and y components of v0x = 5840 m/s andv0y = 8140 m/s. Find the x and y components of the craft acceleration
The uniform 33.0 mT magnetic field in the figure points in the positive z-direction. An electron enters the region of magnetic field with a speed of 5.50 x106m/s and at an angle of 30o above the xy-plane. Find the radius r of the electron's spiral ..
An ultralight plane and pilot have a total mass of 156 kg. what is the net force acting on the plane and pilot
a 2 kg object attached to a horizontal string moves with constant speed in a circle on a frictionless horizontal surface. Find the radius of the circle
illustrate the industry that is Swisher? The specifics of this question comprise - a) sales growth, b) number of domestic competitors, number of private labels and its market share, c) distribution network that dominates d) the buying behaviour of..
What is the resistance of each bulb in a car, which contains a 6-v battery supplying a total of 48 W to two identical headlights in parallel?
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