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A 9 kg block experiences a net force in the opposite direction of its velocity for 2 s. Its velocity decreases by14 m/s. What is the magnitude of the net force? Calculate answer to one decimal.
A current of 6.97 A in a solenoid of length 14.4 cm creates a 0.379-T magnetic field at the center of the solenoid. How many turns does this solenoid contain?
Examination of the subsidiary equations of Laplace transforms that the solution is the sum of normal modes.
a neon atom m 20.0 u makes a perfectly elastic collision with another atom at rest. after the impact the neon atom
A horizontal platform in the shape of a circular disk rotates one frictionless bearing about a vertical axle during the center of the disk. The platform has a radius of 4.34 m and a rotational inertia of 100 kg·m 2 about the axis of rotation. A 68...
A sinusoidal wave travels along a string. The time for a particular point to move from maximum displacement to zero is 0.14 s. What are the (a) period and (b) frequency? (c) The wavelength is 2.5 m; what is the wave speed?
What is the acceleration of a rising hot-air balloon if the ratio of the air density outside the balloon to that inside is 1.39? Neglect the mass of the balloon fabric and the basket.
Three forces act on an object. A 2 N force acts due east and a 3 N force acts due north. If the net force on the object is zero, what is the magnitude of the third force?
the microwave radiation left over from the big bang explosion of the universe has an average energy density of 3.95
A placekicker must kick a football from a point 36.0 m (about 40 yards) from the goal. By how much does the ball clear or fall short of clearing the crossbar
What daily energyintake, in Calories, is required to maintain these basic processes?This is the minimum daily caloric intake needed to avoidstarvation.
When jumping straight down, you can be seriously injured if you land stiff-legged. In a stiff-legged landing he comes to a halt in 4.59 ms. Find the magnitude of the average net force that acts on him during this time
Your cup of coffee is too hot to drink when served at 95.What is mass of an ice cube, taken from a -19.0 freezer, that will cool your coffee to a pleasant 62.
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