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A ball is launched directly upward from ground level with aninitial speed of 19 m/s. (Air resistanceis negligible.)a) How long is the ball in the air?b) What is the greatest height reached by the ball?c) How many seconds after launch is the ball 4 m above the release point?after being thrown (first time)after being thrown (second time)
A cannon tilted up at a 30.0 angle fires a cannon ball at 70.0 m/s from atop a 30.0m -high fortress wall. What is the ball's impact speed on the ground below
A particle moving along the x axis in simple harmonic motion starts from its equilibrium position, the origin, at t = 0 and moves to the right. The amplitude of its motion is 1.70 cm and the frequency is 1.30 Hz.
A flint glass plate (n = 1.66) rests on the bottom of an aquarium tank. The plate is 11.00 cm thick (vertical dimension) and covered with water (n = 1.33) to a depth of 12.2 cm. Calculate the apparent thickness of the plate as viewed from above the w..
An air conditioner draws 15 A at 220-V ac. The connecting cord is copper wire with a diameter of 1.446 mm. how much power is dissipated in the wiring
If the wavelength of ultrasound in soft tissue is 0.308 mm, what is the frequency producing this wavelength
A 120cm3 box contains helium at a pressure of 1.50atm and a temperature of 80.0?C. What is the initial thermal energy of each gas
An important feature of the Carnot cycle is that: A) its efficiency can be 100% B) its efficiency depends on the absolute temperature of the hot reservoir used.
The G string on a violin has a fundamental frequency of 196 Hz. It is 32.0 cm long and has a mass of 0.500 g. what is the effective length of her string
A loop antenna of area 2.00 cm2 and resistance 5.21 ?? is perpendicular to a uniform magnetic field of magnitude 17.0 ?T. How much thermal energy is produced in the loop by the change in field
A rod is 2.40 m long and has a diameter of 2.50 mm. What is the Young's modulus for this rod
A ball thrown into the air lands on the same horizontal level, 31 m away, and 2.6 s later. Find the magnitude of the initial velocity
A ball is thrown so that its initial vertical and horizontal components of velocity are 30 m/s and 25 m/s, Estimate the maximum height the ball reaches
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