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In a mall, a shopper rides up an escalator between floors. At the top of the escalator, the shopper turns right and walks 10.1 m to a store. The magnitude of the shopper's displacement from the bottom of the escalator to the store is 16.0 m. The vertical distance between the floors is 7.60 m. At what angle is the escalator inclined above the horizontal?
Light is emitted by a sodium sample that is moving toward Earth with speed v. The wavelength of the light is 589 nm in the rest frame of sample. The wavelength measured in the frame of Earth is 537 nm. Find v.
A storage tank at STP contains 18.5kg of butane gas, C4H10, Determine the number of moles of butane gas
A rattlesnake can strike with the acceleration equivalent to an increase in speed from 0 to 60 mi/h in 1/2 s. If the rattlesnake's head weighs 0.33 lb, what average power does the rattlesnake generate throughout its strike.
The coefficients of friction between a block of mass 1.0 kg and a surface are ?s = 0.75 and ?k = 0.40. What is the magnitude of the frictional force
An electron and a proton are accelerated starting from rest through a potential difference of 10 million volts. Find the momentum (in MeV/c) and the kinetic energy (in MeV) of each
Capacitors C1 = 5.0 µF and C2 = 2.0 µF are charged as a parallel combination across a 250 V battery. Calculate the resulting charge on each capacitor
A person eats a dessert that contains 230 kcal. The skin temperature of this individual is 36° C and that of her environment is 21° C. The emissivity of her skin is 0.85 and its surface area is 1.3 m2. How much time would it take for her to emit the ..
Find the expression for the electric field, E? , of the ring as the point P becomes very far from the ring (x >> R) in terms of the radius R
The intersection is 15 m wide. Her car's maximum deceleration is -6.8m/s2, whereas it can accelerate from 43km/h to 70km/h in 8.1 s. Overlook length of her car and her reaction time.
A high-speed photograph of a club hitting a golf ball is shown in the figure below. find the average force exerted on the ball by the club
A single chain supports a pulley whose weight is 40 N. Two identical 80-N weights are then connected with a cord that passes over the pulley
A 12.0-cm diameter loop of wire is initially oriented perpendicular to a 1.5-T magnetic filed. What is the average induced emf in the loop
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