Ask question

Ask question

All categories

3 years ago

9

PLEASE HELP ITS DUE IN 30 minutes!!! which two statements explain why a student standing at the top of a step stool doesnt move

downwards

2 answers:

Lesechka [4]3 years ago

7 0

Answer:

i think it is c and b

Explanation:

Svetach [21]3 years ago

6 0

Answer:

The correct answer is option <em><u>b</u></em> and <em><u>c</u></em>.

You might be interested in

What 2 things define the state of matter?

Colt1911 [192]

Answer:

mass and volume

Explanation:

matter is anything that has mass and occupies space(volume)

6 0

3 years ago

Read 2 more answers

If the out come of a 1.0-kg ball moving at 3.0 m/s is 4.5 kinetic energy what would the kinetic energy be if the mass and speed

Flauer [41]

Answer: KE = 36 J

Explanation: Solution:

KE = 1/2 mv²

= 1/2 ( 2 kg)(6 m/s)²

= 36 J

7 0

3 years ago

it takes a hose 4 minutes to fill a rectangular aquarium 9 inches long, 13 inces wide, and 14 inces tall. how long will it take

Studentka2010 [4]

Answer: 43.58 min

Explanation:

Knowing the volume of a rectangular object is length x width x height, we have two volumes:

$V_{1}=(9 in)(13 in)(14 in)=1638 in^{3}$

$V_{2}=(21 in)(25 in)(34 in)=17850 in^{3}$

And we know it takes a time of 4 minutes to fill $V_{1}$ .

If we want to know how long will it take the same hose to fill another tank with volume $V_{2}$ , we can use the <u>Rule of three</u>, which is a mathematical rule to find out an amount that is with another quantity given in the same relation as other two also known:

$1638in^{3}$ ---- $4min$

$17850in^{3}$ ---- $?$

$?=\frac{(17850 in^{3})(4min)}{1638 in^{3}}$

Finally:

$?=43.58 min$

4 0

3 years ago

1,500 J of work was done to move a box of 20m. What force was applied to the box?

Burka [1]

Answer:

75

Explanation:

Calculate Force, Distance from Work Equation

I want to calculate

Force (F)

Force (F)

75

N

Distance (D)

20

m

Work (W)

1500

J

7 0

2 years ago

A particle is in a general circular motion (tangential speed is not constant). Which one of the following statements is always c

timurjin [86]

Answer:

2. The velocity of the particle is tangent to the circle

Explanation:

1. The velocity of the particle is constant.

Incorrect

Reason : Since the tangential speed is not constant, hence the velocity of the particle is not constant.

2. The velocity of the particle is tangent to the circle.

Correct

Reason : In circular motion, the direction of velocity is always given by the tangent to the circle.

3. The acceleration of the particle is constant.

Incorrect

Reason : The tangential speed of the particle is not constant which in turn keeps changing the centripetal acceleration of the particle. hence the acceleration of the particle is not constant.

4. The acceleration of the particle is toward the center of circle.

Incorrect.

7 0

3 years ago