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zlopas [31]
3 years ago
7

The angle at which light hits a surface (angle of incidence) and the angle at which it is reflected away (angle of reflection) a

re ____________.
always greater than 90 degrees.


always the same


always negative


always opposite
Physics
1 answer:
ira [324]3 years ago
8 0

Answer:

are always the same

Explanation:

angle of incident is equal to the angle of reflection i = r

the normal is perpendicular to the reflecting surface

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Answer:

D

Explanation:

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6 0
3 years ago
Explain why a moving object can be in equilibrium
Ivanshal [37]
Well, an equilibrium means that no force are changing an object's inertia (current state of motion).
4 0
3 years ago
PLEASE ANSWER ASAP!! Is a spring force a balanced force? Please, please help!
Jobisdone [24]

Explanation:

The forces acting on a massless object (spring, hook, string or wire, if considered massless) will always balance. Balanced forces acting on an object cause it to compress or stretch. The forces acting on a mass will never cancel.

3 0
4 years ago
A solid cube of aluminum (density of 2.7 g/cm³) has a volume of 0.9 cm³. how many atoms are contained in the cube?​
Reika [66]

Answer:

0.542*10^{23}\ Aluminum\ Atoms

Explanation:

We\ are\ given:\\Density\ of\ aluminum=2.7\ g/cm^3\\Volume\ of\ aluminum-cube=0.9\ cm^3\\Hence,\\As\ we\ know\ that,\\Density=\frac{Mass}{Volume}\\Mass=Density*Volume\\Hence,\ here,\\Mass\ of\ the\ solid\ iron\ cube=2.7*0.9=2.43\ g\\Now,\\We\ also\ know\ that,\\Gram\ Atomic\ mass\ of\ Aluminum = 26.98 \approx 27\ g\\Hence,\\No.\ of\ particles=\frac{Mass}{GAM}*Avagadro's Constant\\Hence,\ here\\No.\ of\ Aluminum\ atoms=\frac{2.43}{27}*6.022*10^{23} \approx 0.542*10^{23}\ Aluminum\ Atoms

8 0
3 years ago
"Suppose an elephant (Tiny) was
yulyashka [42]
Answer :

Distance traveled by Tiny : 8m + 6m + 2m = 16 meters
Displacement of Tiny : 8m (left) - 6m (right) + 2m (left) = 4 meters to the left

Explanation :

Distance : sum of all values of movement given in the question = 8 meters (left) + 6 meters (right) + 2 meters (left)

Displacement : Shortest distance covered from the starting point = 8 meters (left) + 2 meters (left) - 6 meters

Sry I could not explain more hope you found it useful
7 0
4 years ago
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