You apply a 20-newton force on a 4-kilogram box to move it along the floor to the left. The 4-kilogram mass will ________

What is the relationship between the force of gravity between two objects in regard to their mass and the distance between them?

Mashcka [7]

Answer:

hi

Explanation:

5 0

3 years ago

1.

Gwar [14]

Answer:

For 1: The correct option is Option C.

For 3: The final velocity of the opponent is 1m/s

Explanation:

During collision, the energy and momentum remains conserved. The equation for the conservation of momentum follows:

$m_1u_1+m_2u_2=m_1v_1+m_2v_2$ ...(1)

where,

$m_1,u_1\text{ and }v_1$ are the mass, initial velocity and final velocity of first object

$m_2,u_2\text{ and }v_2$ are the mass, initial velocity and final velocity of second object

For 1:

We are Given:

$m_1=150g=0.15kg\\u_1=?m/s\\v_1=0.85m/s\\m_2=3500g=3.5kg\\u_2=0m/s\\v_2=0.85m/s$

Putting values in equation 1, we get:

$(0.15\times u_1)+(3.5\times 0)=(3.5+0.15)\times 0.85\\\\u_1=20.683\approx 21m/s$

Hence, the correct answer is Option C.

For 2:

Impulse is defined as the product of force applied on an object and time taken by the object.

Mathematically,

$J=F\times t$

where,

F = force applied on the object

t = time taken

J = impulse on that object

Impulse depends only on the force and time taken by the object and not dependent on the surface which is stopping the object.

Hence, the impulse remains the same.

For 3:

Let the speed in right direction be positive and left direction be negative.

We are Given:

$m_1=240kg\\u_1=0m/s\\v_1=-1m/s\\m_2=80kg\\u_2=-2m/s\\v_2=?m/s$

Putting values in equation 1, we get:

$(240\times 0)+(80\times (-2))=(240\times (-1))+(80\times v_2)\\\\v_2=1m/s$

Hence, the final velocity of the opponent is 1m/s and has moved backwards to its direction of the initial velocity.

4 0

3 years ago

According to the periodic table, how many protons are in the nucleus of one

vodomira [7]

Answer:

C.

Explanation:

The atomic number is derived from the number of protons in the atomic nucleus. The atomic number of bromine is 35, therefore it has 35 protons in its atoms.

3 0

4 years ago

Read 2 more answers

What color is reflected one red green and blue light is shone on magenta paper

natulia [17]

Magenta is the psychological perception of the mixture of red and blue light
at high intensity, with the absence of green. So your "magenta" paper is
absorbing the green and reflecting the red and the blue.

5 0

3 years ago

A 2.50-kg stone is dropped from rest at a height of 3.75 m. What impulse does gravity impart to this stone from the instant it i

Art [367]

Answer:

22.3Ns

Explanation:

Hi!

To solve this exercise follow the steps below.

1. Find the weight of the stone by multiplying the gravity (9.8m / s ^ 2) by the mass.

W=mg

m=mass=2.5kg

g=gravity=9.8m / s ^ 2

W=(2.5)(9.8)=25.5N

2. Find the time it takes for the stone to touch the ground using the kinematic equation for constant acceleration.

Vf=Vo+a.t

y= VoT+\frac{1}{2}gt^{2}

Where

Vo = Initial speed =0

T = time

g=gravity=9.8m/s^2

Y= height= 3.75m

solving for time

$2y=gt^2\\t=\sqrt{ \frac{2y}{g} }=\sqrt{ \frac{2(3.75)}{9.8} }=0.87s$

3. For a constant force such as weight, the impulse is calculated as the product between force and time.

I=wt

I=(25.5N)(0.87S)=22.3Ns

5 0

3 years ago

You apply a 20-newton force on a 4-kilogram box to move it along the floor to the left. The 4-kilogram mass will _________.