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Nostrana [21]
3 years ago
6

A 23-newton horizontal force westward and a 23-newton horizontal force eastward act concurrently on a 10-kilogram object on a fr

ictionless surface. What is the magnitude of the object’s acceleration?
1) 0.0 meters/second^2
2) 1.0 meters/second^2
3) 2.3 meters/second^2
4) 1.5 meters/second^2

Physics
1 answer:
BARSIC [14]3 years ago
7 0
The forces cancel out each other because they are equal and opposite. Therefore the net force is 0 and there will be no acceleration

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6. A 145-g baseball moving 30.5 m/s strikes a stationary 5.75-kg brick resting on small rollers so it moves without significant
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Answer:

Explanation:

a )

momentum of baseball before collision

mass x velocity

= .145 x 30.5

= 4.4225 kg m /s

momentum of brick after collision

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Applying conservation of momentum

4.4225 + 0 = .145 x v + 6.325 , v is velocity of baseball after collision.

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b )

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c )

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= .5 x 5.75 x 1.1²

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Total kinetic energy after collision

= 15.96 J

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3 years ago
A magnetic field is directed perpendicular to the plane of a 0.15-m × 0.30-m rectangular coil consisting of 240 loops of wire. T
ValentinkaMS [17]

Answer:

7.344 s

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e = - 2.5 v

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ΔB = B2 - B1 = 1.8 - 0.1 = 1.7 T

Δt = ?

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e = - N x A x ΔB/Δt

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Δt = 7.344 s

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2 years ago
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60,000 is 100 time as much as
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60,000 is 100 times as much as 600

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