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aleksandr82 [10.1K]
3 years ago
5

Give a example of scalar quantity

Physics
2 answers:
Bond [772]3 years ago
8 0

time , temperature  and something that doesn't have direction

Serhud [2]3 years ago
7 0

speed, volume, mass, temperature and power

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What experimental evidence led to the development of this atomic model from the one before it?
Marina86 [1]

Answer:

A few of the positive particles aimed at a gold foil seemed to bounce back

Explanation:

7 0
2 years ago
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The pupil of a cat's eye narrows to a slit width of 0.5 mm in daylight. What is the angular resolution of the cat's eye in dayli
Elenna [48]

Answer:

C. 10⁻³ rads

Explanation:

Here, we shall use Rayleigh's Criterion to find out the angular resolution of Cat's eye during day light. Rayleigh's Criterion is written as follows:

θ = λ/a

where,

θ = angular resolution of Cat's eye = ?

λ = wavelength = 500 nm = 5 x 10⁻⁷ m

a = slit width of eye = 0.5 mm = 5 x 10⁻⁴ m

Therefore,

θ = (5 x 10⁻⁷ m/5 x 10⁻⁴ m)

Therefore,

θ = 0.001

θ = Sin⁻¹(0.001)

θ = 0.001 rad = 1 x 10⁻³ rad

Hence, the correct answer is:

<u>C. 10⁻³ rads</u>

4 0
2 years ago
A semi-truck is traveling at 65mph on the freeway and you are traveling in your Ford
Ymorist [56]

Answer:

The vehicle with the most mass

Explanation:

Momentum is the quantity of motion in a body and it is dependent on its mass and velocity.

Momentum  = m x v

m is the mass

v is the velocity

Now,

Both mass and velocity are directly proportional to  momentum. Since the two bodies moves with the same velocity, the vehicle with the most mass will have the greatest momentum

7 0
3 years ago
I need help with this someone help me?
Brilliant_brown [7]
Graph A so answer B also why isn’t answer a with graph A and B with graph B etc like that’s just confusing lol
3 0
2 years ago
Who has the most power? athlete A (bench presses 100 kg over 0.6 m in 0.5 s) athlete B (bench presses 150 kg over 0.6 m in 1.0 s
MrRissso [65]

Answer:

Athlete A

Explanation:

Power is the rate of doing work and it is calculated as follows:

Power = work done/time taken = mgh/t

(for work being done against gravity)

So for athlete A

P = (100 kg * 9.8 N/kg* 0.6m)/0.5 s = 1176 W

For athlete B

P = (150 kg * 9.8 N/kg* 0.6m)/1 s = 882 W

For athlete C

P = (200 kg * 9.8 N/kg* 0.6m)/2 s = 588 W

For athlete D

P = (250 kg * 9.8 N/kg* 0.6m)/2.5 s = 588

4 0
2 years ago
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