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The force shown in the attached figure is the net eastward force acting on a ball. The force starts rising at t = 0.020 s, falls back to zero at t = 0.062 s, and reaches a maximum force of 55 N at the peak. Determine with an error no bigger than 25% (high or low) the magnitude of the impulse (in N-s) delivered to the ball. Hint: Do not use J = F?t. Look at the figure. Find the area of a nearly equally sized triangle.
Seismographs measure the arrival times of earthquakes with a precision of 0.100 s.7 To get the distance between to the epicenter of the quake, they compare the arrival times of S- and P-waves, which travel at different speeds.
If an R = 1.0-k? resistor, a C= 1.0-µF capacitor, and an L = 0.20-H inductor are connected in series with a V = 150 sin (377t) volts source
A frictionless block of mass 1.95 is attached to an ideal spring with force constant 340 . At the spring is neither stretched nor compressed and the block is moving in negative direction at a speed of 12.6.
The wavelength of an ocean wave
The position of an object as a function of time is (3.2t + 1.8t^2)i + (1.7t + 2.4t^2), Find the magnitude and direction of the object
A 30-dB sound wave and a 20dB sound wave simultaneously strike a sound detector with an area of 5*10-1 cm2. Find energy absorbed by the detector in 3 hours
A 15 kg brick rests on a roof that is at an angle of 40º to the horizontal. What is the component of the force into the surface of the roof
A paperweight consists of a 9.00-cm thick plastic cube. Within the plastic a thin sheet of paper is embedded, what is the index of refraction of the plastic
A car is stopped for a traffic signal. When the light turns green, the car accelerates, increasing its speed from zero to 9.72 m/s in 3.84 s. find the average force experienced by the passenger
The activity of a freshly prepared radioactive sample is 1010 disintegrations per second, whose mean life is 109 s. find the mass (in mg) of the radioactive sample
A wave has angular frequency 140 rad/s and wavelength 1.60 m. Calculate the angular wave number
An audio amplifier, represented by the AC source and the resistor R, what is the time-averaged power delivered to the speaker
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