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A spaceship lifts off vertically from a planet where g = 7.0 m/s2. If the ship has an upward acceleration of 1.8 m/s2 as it lifts off, what is the magnitude of the force exerted by the ship on its pilot, who weighs 665 N on Earth?
A 19.0 -kg box is released on a 37 incline and accelerates down the incline at 0.30 m/s^2. Find the friction force impeding its motion
Suppose a car is traveling at +20.7 m/s, and the driver sees a traffic light turn red. After 0.314 s has elapsed (the reaction time), What is the stopping distance of the car
A sine wave is traveling along a string. The time for a particular point to move from maximum displacement to zero is 0.880 s. What is the period?
Hakeem throws an 8.00 g ball straight down from a height of 2.0 m. The ball strikes the floor at a speed of 7.40 m/s. What was the initial speed of the ball? Assume that air resistance is negligible.
suppose that a uniform magnetic field is everywhere perpendicular to this page. the field points directly upward toward
The electric potential energy stored in the capacitor of a defibrillator is 37J, and the capacitance is 120μF. What is the potential difference across the capacitor plates?
Charge is distributed uniformly throughout the volume of an infinitely long cylinder of radius R = 1.00×10-2 m. The charge density is 1.00×10-1 C/ m3. What is the electric field at r = 5.00×10-3 m? What is the electric field at r = 2.00×10-2 m?
Given that the latent heat of water/steam is approximately 41,000 J/mol, at what pressure will water boil at 50 degress Celcius? hint: remember that at 1 atm water boils at 373 K. Also, assume that the latent heat is constant and that the volume of t..
An electron with 184eV of kinetic energy in free space passes over a finite potential well 72eV deep that stretches from x=0 to \(x = 0.5\) nm. What is the electron's wavelength in free space
The specific heat of a 98 g block of material is to be determined. The block is placed in a 25 g copper calorimeter that also holds 60 g of water. Determine the specific heat of the block
A rectangular container measuring 32 cm 39 cm 62 cm is filled with water. What is the mass of this volume of water in kilograms and grams
A cyclist does at the rate of 500 W while riding. With how much average horizental force does the wheel push when she istraveling at 10m/s
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