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3 years ago

A worker uses a cart to move a load of bricks weighing 680 N a distance of 10 m across a parking lot.

Physics

2 answers:

8_murik_8 [283]3 years ago

8 0

The answer is B because force = work times distance so you would multiply 209N times 10m

NNADVOKAT [17]3 years ago

4 0

When you are finding work, the easiest way is to use the formula.

W = F*D

Where F is the force and D is the distance. Simply take the constant force of 209N and multiply it by the distance of 10m. Which will give you 2090J

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You are a project manager for a manufacturing company. One of the machine parts on the assembly line is a thin, uniform rod that

ra1l [238]

Answer:

a) $I=0.012\ kg.m^2$

b) $I=0.012\ kg.m^2$

Explanation:

Given that:

mass of rod, $m=0.4\ kg$

length of the rod, $l=0.6\ kg$

(a)

Moment of inertia of rod about its center and perpendicular to the rod is given as:

$I=\frac{1}{12} m.l^2$

$I=\frac{1}{12} 0.4\times 0.6^2$

$I=0.012\ kg.m^2$

(b)

Moment of inertia on bending the rod to V-shape of 60 degree angle and axis being perpendicular to the plane of V at the vertex.

We treat it as two rod with axis of rotation at the end and perpendicular to the plane of rotation. 

So, the mass and the length of the rod will become half of initial value.

$I=I_1+I_2$

$I=\frac{1}{3} \frac{m}{2} (\frac{l}{2})^2 +\frac{1}{3} \frac{m}{2} (\frac{l}{2})^2$

$I=2[ \frac{1}{3}\times 0.2\times 0.3^2]$

$I=0.012\ kg.m^2$

7 0

3 years ago

If a swimmer pushes off a pool wall with a force of 250n, what is her acceleration.

grigory [225]

Her acceleration is

(250) divided by (the swimmer's mass, in kilograms).

The unit is " meters per second² " .

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steposvetlana [31]

Answer:

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Answer:

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larisa86 [58]

Answer:

0.0000005

Explanation:

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