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Q1. Janet jumps off a high diving platform with a horizontal velocity of 1.55 m/s and lands in the water 1s later.
How high is the platform? The acceleration of gravity is 9.80 m/s2.
Reply in units of m
Q2. A bullet is fired straight up from a gun with a muzzle velocity of 259 m/s.
Neglecting air resistance, what will be its displacement after 7.6 s? The acceleration of gravity is 9.8 m/s2.
What is the length of the greatest and thinnest string that can be located under a tension of 860 without breaking .
What is an acceleration of the car
What is magnitude of the electric field
a) Determine the magnitude and direction of the electrostatic force acting on particle A in the figure given below due to particles B and C . The values of the charge on these particles are indicated in the figure.
However, the current begins to decrease as the resistive element warms up. When the toaster reaches its final operating temperature, the current has dropped to 1.53 A.
Which color has the highest index of refraction
The loaded cab of an elevator has a mass of 3.0 x 10^3 kg and moves 145 m up the shaft in 23 s at constant speed. At what average rate does the force from the cable do work on the cab.
A conveyor belt at a quarry lifts 2,000 kg of sand per minute up a vertical distance of 12 meters. The sand is at first at rest, then moves at a speed of 0.20 m/s along conveyor belt. What is the instantaneous power generated by this machine .
A radio station broadcasts at a frequency of 600,000 Hz. Know that radio waves have a speed of 3.00 x 10^8m/s, what is wavelength of these waves.
What is modify in frequency ff - fi
Compute the amplitude and phase at the observation screen
What is the launch speed of a projectile that rises vertically above the Earth to an altitude equal to five before coming to rest momentarily.
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