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Physics
If a motor lifts a 400.-kilogram mass a vertical
distance of 10. meters in 8.0 seconds, the
minimum power generated by the motor is
(1) 3.2 * 10^2 W (3) 4.9 * 10^3 W
(2) 5.0 * 10^2 W (4) 3.2 * 10^4 W
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Silvia
Physics
Gravity decreases with distance. Which statement is also true?
Orbital speed increases with distance.
Orbital speed decreases with distance.
Orbital speed remains constant with distance.
Orbital speed varies based on the functions of friction.
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Lainey Merritt
Physics
O que é cena fone de luz na visão da fisica
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Pepsi
Physics
Why do we apply oil on door hinges
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Malakai Maynard
Physics
What is the relationship between power and voltage
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Ashlee Arroyo
Physics
Consider a system of an 85.0 kg man, his 21.0-kg dog, and the earth. The gravitational potential energy of the system increases by 2.40 103 J when the man climbs a spiral staircase from the first to the second floor of an apartment building. If his dog climbs a normal staircase from the same first floor to the second floor, by how much does the potential energy of the system increase (in J) ?
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Lillianna Holder
Physics
2 g of a gas initially at 4.00 atm is compressed from 8.00 l to 2.00 l at constant temperature. what is the resulting pressure in atm of the gas?
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Jaqueline Bass
Physics
What is the difference between a mechanical wave and an electromagnetic wave?
O
A mechanical wave travels through empty space, while an electromagnetic wave travels through matter.
O A mechanical wave has a short wavelength, while all electromagnetic waves have long wavelengths.
O A mechanical wave has a high frequency, while all electromagnetic waves have low frequencies.
O Amechanical wave travels through matter, while an electromagnetic wave travels through empty space.
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Alani Aguilar
Physics
Select the object that has the most gravitational force.
a sand grain
a marble
a bowling ball
a tennis ball
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Lance Larson
Physics
What areas of the work force can science be applied to
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Guest
Physics
Rank from fastest to slowest the following waves according to their speed of propagation:
A. An earthquake wave
B. A tsunami
C. A sound wave in air
D. A light wave
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Jr
Physics
William Ferrel: introduced significant wave" forecasting
measured under-surface currents using a current drag
created a tide-prediction machine
developed the first sonar device
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Emery George
Physics
A superhero flies 285 m from the top of a tall building at an angle of 35◦ below the horizontal.
What is the horizontal component of the superhero's displacement?
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Bossy
Physics
Work occurs when
an applied force results in movement of an object in the same direction as the applied force.
an object is subjected to balanced forces resulting in movement of the object.
the energy present is the result of the force acting on the object.
the movement of the object was caused by a force and is in the opposite direction of the force.
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Rey Salas
Physics
Explain what is meant by the term "good mother dinosaurs."
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