Name 2 forces acting on an object at rest Only need 1 got gravity
Answers
You mean like a box sitting on a table.
One force is the force of gravity, pulling downward on the box.
Now, you know that the forces acting on the box must be balanced, because
if they're not, then the box would be accelerating. But it's just sitting there, so
there must be some other force, just exactly the right strength and direction to
exactly cancel the force of gravity on the box, so that the net force on it is zero.
The other force is the force of the table pushing upward on the box. It's called
the "normal force".
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According to the information in your study unit, which of the following locations requires the highest illuminance? A. A residential stairway B. A school locker room C. A bank lobby D. A study area
b. just above Earth's surface
c. on Earth's surface
Answers
The acceleration of gravity at the surface of the Earth is approximately 9.8 meters (32 feet) per second per second. As a result, during free fall, an object's speed rises by around 9.8 meters per second.
Explain about the force of gravity?
The force that binds all masses in the universe together, particularly the pull of the earth's mass on objects that are close to its surface.
The term gravitational force refers to the force that the earth exerts on a body. Examples of motion caused by gravitational force include the downward motion of water in a river, the downward motion of water in a stream, and the upward motion of a ball when it is thrown.
All physical things with mass are drawn to the gravitational force, which can be thought of as an attracting force. It is the known natural force that is by far the weakest. representation in mathematics. The formula for gravitational force is F = G m 1 m 2 r in mathematics.
The answer is on earth surface
To learn more about force of gravity refer to:
#SPJ2
close as you can to the center of the Earth (but not underground).
From the choices listed, that would be (c).
Answers
Answer:
A very small tilt in Earth’s axis would likely cause _____.
no climate changes
large seasonal variations in temperature
short-term climate changes
small seasonal variations in temperature
Explanation:
Answer small seasonal variations in temperature
The tilt of Earth’s axis changes by about 3 degrees. This affects the severity of the seasons. When Earth’s axis is less tilted, the temperature difference between summer and winter is less.
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Therefore,
3 x 0.45 x 10 = 13.5J <- it's joules because it's energy
(b) Red
(c) Green
(d) Violet
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The color which is displaced the most will be "Violet".
Refractive index
According to the question,
Indices of refraction,
Red, = 1.520
Green, = 1.526
Violet, = 1.538
The higher the refractive index of something like a wavelength, the generally greater the departure from the glass's surfaces or ground. The emerging ray always seems to be perpendicular towards the incident light.
You now understand something the greater more deviation somewhere at this same surface of the object, the greater the laterally or sideways displacement.
Thus the response above i.e., "Option d" is correct.
Find out more information about refractive index here:
Answer:
(d) Violet
Explanation:
The formula for lateral displacement = t sin ( i - r ) / cos r
where t is thickness of slab , i is angle of incidence , r is angle of refraction
refractive index = sin i / sin r
if refractive index is high , for given i , angle of r will be less
i - r will be more , hence sin( i - r ) will be more
cos r will be less ( larger the angle , lesser will be its cos value )
sin( i - r ) / cos r will be more
lateral displacement will be more .
hence higher refractive index results into greater displacement .
So violet ray will undergo maximum displacement .
B. before = 7, after = 4
C. before = 4, after = 7
D. before = 9, after = 7
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Answer:
A before = 7, after = 9
Explanation:
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I hope I helped! =D