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ahrayia [7]
3 years ago
13

What is the vector sum of (7,5) and (13,-5)?

Physics
1 answer:
-BARSIC- [3]3 years ago
8 0

To add or subtract two vectors, just add or subtract the corresponding components. This is:

(7, 5) + (13, -5) = (7+13 , 5-5) = (20, 0)

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A rifle with a weight of 40 N fires a 5.5-g bullet with a speed of 220 m/s.(a) Find the recoil speed of the rifle.
liubo4ka [24]

Answer:

0.2695/s

Explanation:

Using the formula for calculating impulse

Impulse = m(v-u) = Ft

M is the mass

v is the final velocity.

u is the initial velocity

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t is the time

Get the time;

t = m(v-u)/F

t = 0.0055(220)/40

t = 0.0275s

Get the speed of the rifle

v = u+gt.

v = 0+9.8(0.0275).

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Hence the speed of the rifle is 0.2695m/s

3 0
3 years ago
What kind of scientist investigation involve making observations
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GaryK [48]

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6.67×10⁻⁸ cm³/g/s²

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= 6.67×10⁻¹¹ (kg m/s²) m²/kg²

= 6.67×10⁻¹¹ m³/kg/s²

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3 0
3 years ago
The outside diameter of your teacher's rear bicycle tire is 16 inches. How far will he travel if the rear wheel makes 1200 revol
FinnZ [79.3K]

Answer:

241,274.32 inches

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How far will he travel if the rear wheel makes 1200 revolutions on the road?

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D = 1200π(16)²/4

D = 76800π

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kykrilka [37]
Possibly by the damage done compared to the previous ones.
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4 years ago
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