Physics, 22.10.2019 18:50 mistycascaden
Aperson pushes a 18.8-kg shopping cart at a constant velocity for a distance of 17.9 m on a flat horizontal surface. she pushes in a direction 32.1 ° below the horizontal. a 52.7-n frictional force opposes the motion of the cart. (a) what is the magnitude of the force that the shopper exerts? determine the work done by (b) the pushing force, (c) the frictional force, and (d) the gravitational force.
Answers: 1
Physics, 21.06.2019 19:30
Aparticle travels in a circular orbit of radius 21 m. its speed is changing at a rate of 23.1 m/s2 at an instant when its speed is 37.2 m/s. what is the magnitude of the acceleration (in m/s? ) of the particle?
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Physics, 21.06.2019 20:00
Alice added sodium chloride to water and stirred the water for several minutes. alice is most likely trying to demonstrate that ionic compounds a. are hard. b. can dissolve. c. are clear. d. can melt.
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Physics, 22.06.2019 05:00
Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?
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Physics, 22.06.2019 10:00
There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.
Answers: 1
Aperson pushes a 18.8-kg shopping cart at a constant velocity for a distance of 17.9 m on a flat hor...
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