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irinina [24]
3 years ago
6

You are measuring the mass of different chemicals to get ready to conduct an experiment.

Physics
2 answers:
Zinaida [17]3 years ago
4 0

Answer:

The answer is grams

Explanation:

vova2212 [387]3 years ago
3 0

Answer:

B) grams

The SI unit for mass is grams.

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The range of a projectile fired at an angle with the horizontal and with an initial velocity of feet per second is where r is me
77julia77 [94]

Answer:

θ = 8.50°

To the nearest angle

θ = 9.0°

the golfer must hit the ball at angle 9° so that it travels 120 feet.

Explanation:

The range of a projectile is the horizontal distance covered by a projectile, which can be written as;

r = (u^2× sin2θ)/g

Where;

r = range

u = initial speed

θ = angle from horizontal

g = acceleration due to gravity

Solving for θ,

sin2θ = rg/u^2

θ = 1/2 × sin⁻¹(rg/u^2) ....1

Given;

r = 120 ft

u = 115 ft/s

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Substituting the values into the equation 1;

θ = 1/2 × sin⁻¹(120×32.2/115^2)

θ = 1/2 × sin⁻¹(0.29217)

θ = 1/2 × 17.00

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To the nearest angle

θ = 9.0°

5 0
3 years ago
Which ray diagram shows reflection
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