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3 years ago

5

What is a conservative force?

1 answer:

almond37 [142]3 years ago

8 0

Answer:

A conservative force is a force with the property that the total work done in moving a particle between two points is independent of the path taken Equivalently if a particle travels in a closed loop the total work done by a conservative force is zero

Explanation:

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How much time does it take a power drill accelerating at 64.3 rad/s2 to achieve

Diano4ka-milaya [45]

Answer;

= 0.244 seconds

Explanation;

500 rpm is equivalent to; 1500 × 2π radians per minute

= 9424.8 rad/minute

To get revolutions per second we divide by 60

= 9424.8/60

= 157.08 radians per second.

Then we divide by 64.3 rad/s^2 to get time;

= 157.08/64.3

= 0.244 seconds.

7 0

3 years ago

Read 2 more answers

A rocket sled accelerates at a rate of 49.0 m/s2 . Its passenger has a mass of 75.0 kg. (a) Calculate the horizontal component o

Katen [24]

Explanation:

It is given that,

Mass of the passenger, m = 75 kg

Acceleration of the rocket, $a=49\ m/s^2$

(a) The horizontal component of the force the seat exerts against his body is given by using Newton's second law of motion as :

F = m a

$F=75\ kg\times 49\ m/s^2$

F = 3675 N

Ratio, $R=\dfrac{F}{W}$

$R=\dfrac{3675}{75\times 9.8}=5$

So, the ratio between the horizontal force and the weight is 5 : 1.

(b) The magnitude of total force the seat exerts against his body is F' i.e.

$F'=\sqrt{F^2+W^2}$

$F'=\sqrt{(3675)^2+(75\times 9.8)^2}$

F' = 3747.7 N

The direction of force is calculated as :

$\theta=tan^{-1}(\dfrac{W}{F})$

$\theta=tan^{-1}(\dfrac{1}{5})$

$\theta=11.3^{\circ}$

Hence, this is the required solution.

8 0

4 years ago

Gerry is looking at salt under a powerful microscope and notices a crystalline structure. What can be known about the salt sampl

malfutka [58]

i know it is c

here is the answer

7 0

2 years ago

Insulators have very high .

Vlad1618 [11]

Answer:

Resistance to electrical currents

Explanation:

Conductors have low resistance to electrical currents, and are used to "conduct" the flow of electricity.

Insulators have very high resistance and are used to protect us from the flow of electricity.

5 0

3 years ago

If an object has a volume of 2.5mL and a mass of 10g than what is the density of an object?

Hoochie [10]

Density is equal to mass divided by volume, so the density of the object is 10/2.5= 4<span> g/cm</span>

3 0

4 years ago