Physics

a 500-w device is connected to a 120-v ac power source. what is the peak voltage across this device?
1 Answer
200 g 20 g, Sketch free-body then calculate the acceleration of the trolley. (7)
1 Answer
a spaceship has a rest mass of 660,000 tons. if you could measure its mass when it was traveling at half the speed of light, what would the value be?
1 Answer
consider a moving charged particle in region of magnetic field. which if the folowing angles between the magnatic field and the particle velocity will result in the largest force on the particle?
1 Answer
in a model ensemble system, what do meteorologists change each time they run a simulation of the same model?(1 point) responses
1 Answer
when einstein's theory of gravity (general relativity) gained acceptance, it demonstrated that newton's theory had been?a. wrongb. incompletec. really only guess
1 Answer
a satellite requires a speed of about 7.8 km/s to maintain low earth orbit. if the orbit has a radius of 7.0 x 10^6 m, find the satellite's centripetal acceleration.
1 Answer
A 0.2-kg hockey puck, moving at 24 m/s, is caught and held by a 75-kg goalie at rest. With what speed does the goalie (with the puck) slide on the ice?
1 Answer
Which of the choices correctly shows the result of the interference of waveforms I and II?
1 Answer
a weight lifter lifts a 390-n set of weights from ground level to a position over his head, a vertical distance of 1.80 m. how much work does the weight lifter do, assuming he moves the weights at constant speed?
1 Answer
in the circuit to the right the battery maintains a constant potential difference between its terminals at points 1 and 2. the three light bulbs a b and c are identical. how do the brightness of the 3 bulbs compare to each other?
1 Answer
wire b has 4.6 times the resistance of wire a. if the same voltage is placed across them, find the ratio of the currents, ib/ia.
1 Answer
Jack and Jill stand on the ice and push off each other. Jack's 64.3-kg body is propelled westward with a velocity of 2.19 m/s. What is the eastward velocity of Jill's 45.4-kg body?
1 Answer
basics of quantum physics and how it works?
1 Answer
A golf ball has one-tenth the inertia and three times the speed of a baseball.what is the ratio of the magnitudes of their moomenta
1 Answer
calculate the torque produced by a 42-n perpendicular force at the end of a 0.17-m-long wrench. group of answer choices 24 nm none of these. 1.7 nm 7.1 nm
1 Answer
does adding too many fins on a surface causes the overall heat transfer coefficient and heat transfer to increase?
1 Answer
as a student runs a plastic comb through her hair, the comb acquires a negative electric charge this charge resuklts from the transfer of
1 Answer
tyrell is playing marbles with his younger sister. a 6.63-g marble moving at 1.41 m/s has a head-on collision with a 2.86-g marble, initially at rest on the playing surface. the post-collision speed of the 6.63-g marble is 0.86 m/s. what is the speed (in m/s) of 2.86-g marble after the collision?
1 Answer
a heat pump with a cop of 4.0 supplies heat to a building at a rate of 100 kw. determine the power input to the heat pump.
1 Answer
a 14.3 v battery is connected to a 7.9 pf parallel-plate capacitor. what is the magnitude of the charge on each plate?
1 Answer
Calculate the resistance of copper wire 20 m long and diameter of 0.05cm
1 Answer
- a car rounds an unbanked curve of radius 50 m. if the coefficient of static friction between the road and car is 0.67, what is the maximum speed (in m/s) at which the car can traverse the curve without slipping?
1 Answer
QuestionTwo bicycles have the following equations of motion, what is the distance between the bicycles at t = 0?X1= -6. 0 m+ (7. 5 m/s)X2 = 9. 6 m +(-4. 5 m/s)t
1 Answer