what is gravitation?

Answer:

orce or acceleration b. Ms. Sunderland finally decided to take this seriously and put both hands on the rope and applied a 1000 N force to the left, while Jared and James still struggled with their 300 N force to the right. What is ... 150 more force. 10. During 5th period Dylan resisted the forces applied by her classmates in a ...

Explanation:

Answer:

Besides sound and radio waves, the Doppler effect also affects the light emitted by other bodies in space. If a body in space is "blue shifted," its light waves are compacted and it is coming towards us. If it is "red shifted" the light waves are spread apart, and it is traveling away from us.

Explanation:

Explanation:

ans ...(5,3)..............

Answer:

x = 5

y = 3

Explanation:

x + y = 8 and 3x + 2y = 21

Here We use Substitution Method

x + y = 8 ...(1)

3x + 2y = 21 ...(2)

From equation (1) we get

x + y = 8

x = 8 - y

Now the value of x = 8 - y in equation (2)

3(8 - y) + 2y = 21

24 - 3y + 2y = 21

- y = 21 - 24

y = 3

Then Put the value of y in equation (1)

x + (3) = 8

x + 3 = 8

x = 8 - 3

x = 5

Thus The value of x is 5 and y is 3

x + y = 8

5 + 3 = 8

8 = 8

3x + 2y = 21

3(5) + 2(3) = 21

15 + 6 = 21

21 = 21

L.H.S = R.H.S

-TheUnknownScientist

Answer:

-4 m/s^2

Explanation:

v=vo+at

0=40+a(10)

-40=a(10)

-4=a

Answer:

324 units

Explanation:

Given that,

Objects 1 and 2 attract each other with a gravitational force of 36.0 units.

The distance separating Objects 1 and 2 is changed to one-third the original value.

Let the new force be F' and r'=r/3. so,

[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]

[tex]F'=\dfrac{kq_1q_2}{r'^2}\\\\F'=\dfrac{kq_1q_2}{(\dfrac{r}{3})^2}\\\\=9\times \dfrac{kq_1q_2}{r^2}\\\\=9F\\\\=9\times 36\\\\=324\ \text{units}[/tex]

So, the new force become 324 units.

Answer:

velocity=2m/s

I hope it's helps you

Answer:

Its average speed, pretending that it traveled at a constant speed, is

v = s / t

= 600 m

5 x 60 s

= 2 m/s

Hope it help...

Havea great day

Answer:

all the body parts work together to make your body function properly, so therefore, a lot of other body parts will break down

Answer:

A) Armstrong is not a unit of pressure. In fact, I don't think it's even a unit at all, an "Amstrong" is a unit of length, if that's what you meant.

Atmospheres, Millimeters of mercury, and Pascals are all units of pressure.

Let me know if this helps!

Answer:

50 kg

Explanation:

f=ma

Force = mass x acceleration

490 = 9.8 x m

m = 50 kg

Answer:

Work = 165670.4 J = 165.67 KJ

Explanation:

First, we will find the deceleration of the car, using the 3rd equation of motion:

[tex]2as = v_{f}^2 - v_{i}^2\\[/tex]

where,

a = deceleration = ?

s = skid distance = 40 m

vf = final speed = 0 m/s

vi = initial speed = 17.2 m/s

Therefore,

[tex]2a(40\ m) = (0\ m/s)^2 - (17.2\ m/s)^2\\a = - 3.698\ m/s^2[/tex]

the negative sign indicates deceleration here.

Now, we will calculate the braking force applied by the brakes on the car:

[tex]F = ma\\F = (1120\ kg)(-3.698\ m/s^2)\\F = - 4141.76\ N[/tex]

the negative sign indicates braking force.

Now, we will calculate the work done using the magnitude of this force:

[tex]Work = |F|s\\Work = (4141.76\ N)(40\ m)\\[/tex]

Work = 165670.4 J = 165.67 KJ

Answer:

Explanation:

For free body diagram see attached sheet .

W is weight of steel girder acting at the middle point of its length . T is tension in the cable .

OB = √ ( 12² - 2² )

= 11.83 m .

OC = 11.83 / 2 = 5.915 m

Taking moment of tension T and weight W about point O

W x OC = T x OB

22 x 5.915 = T x 11.83

T = 22 x 5.915 / 11.83

= 11 kN

Considering forces acting in vertical direction and equating forces in opposite direction

T + R = W

R = W - T

= 22 - 11 = 11 KN

So force of grinder on the ground = R

= 11 KN.

Answer:

both statements are truth

Explanation:

a-The Joule effect, also called Joule's law, is the thermal manifestation of electrical resistance. ... In all these cases, it is intended to generate thermal energy with electricity passing through its conductors. This heat they give off is due to the Joule effect.

b-sure of a liquid tank depends only on the density of the liquid and depth from the free surface. It is a scalar quantity and is same in all directions, at a point.

Answer: Frequency of 1 ÷ 2 = 0.5 Hz.

Answer:

A) speed up

is the correct option

Answer:

slows down

Explanation:

As the temperature difference decreases the rate of transfer slows (hope this helps)

Force

Explanation:

so force is your answer see why b/c

Answer:

35N

Explanation:

if its balanced both sides would have equal forces. Left side is 35N and right side is 70N. 70-35=35N

brainliest

Answer:

I thinks its c

Explanation:

I hope this helps :)

Locomotion is the ability to move from place to place, or the act of doing so.

Answer:

movement of living from living organisms from one place to another is called locomotion

Complete Question:

On a circular race track with a radius of 3.23 km, a certain road car set a speed record of 372 km/h. What was the car's centripetal acceleration?

Answer:

Centripetal acceleration = 3.306 m/s²

Explanation:

Given the following data;

Radius, r = 3.23 km to meters = 3.23 * 1000 = 3230 m

Velocity = 372 km/h to meters per seconds = 372*1000/3600 = 103.33 m/s

To find the centripetal acceleration;

Centripetal acceleration = velocity²/radius

Centripetal acceleration = 103.33²/3230

Centripetal acceleration = 10677.09/3230

Centripetal acceleration = 3.306 m/s²

Answer:

20 watts

Explanation:

Big brain mode activated:

Power=1200J/60sec

Power=20 watts

Answer:

the point the mass of an object will increase when traveling at relativistic speeds

Explanation:

m = m0/((1 - v2/c2))1/2

m0 = the mass measured at rest relative

m = the mass measured by the observers on the other reference frame.

v = the speed of the object

c = the speed of light in a vacuum

Answer: concentration c = 25.2 g /(41.99 g/mol × 0.75 l)

Explanation: M(NaF) = 41.99 g/mol and amount of substance n = m/M.

Concentration c = n/V

What is the molarity (concentration) of 25.2 grams of NaF dissolved in a total volume of 0.75 liters is 0.8 mol/liter.

What is Molarity ?

Molarity shows the concentration of solute in the given solution. It is defined as no. of moles of solute present in 1 liter of solution. It is denoted by M. its SI unit is mol/L.

Hence, molarity is given by,

Molarity = No. of moles of solute ÷ Volume of the solution in liters

Given,

mass of NaF = 25.2 g

Volume of the solution = 0.75 liters

Molarity = ?

Let's find No. of moles of the solute.

NaF has one Na and one F.

Molar mass of NaF is,

Na = 22.98*1 = 22.98

F = 18.99*1 = 18.99

Molar mass of NaF is 22.98+18.99= 41.97 g/mol

No. of moles of the solute is,

25.2g of NaF × (1÷41.97 ) mol/g = 0.6 mol.

Molarity of NaF is,

Molarity = No. of moles of solute ÷ Volume of the solution in liters

M = 0.6 mol ÷ 0.75 liters

M = 0.8 mol/liter

Hence molarity of NaF is 0.8 mol/liter.

To know more about molarity, click :

https://brainly.com/question/2817451

#SPJ3.

Answer:

The answer is D

Answer:

Aluminum has the highest atomic number

1g=1000kg

120*1000

=120000kg

120000kg*10N/kg

=1200000N

Answer:

for question 5 its

Explanation:

Through Brahe's astronomical measurements and Kepler's own drawings of the geometrical relationship between the Sun and Mars in various parts of the planet's orbit, Kepler discovered that planets moved faster when they were closer to the Sun.

[tex]\huge\mathfrak\green{answer}[/tex]

As per as my knowledge

The speed of a wave in a medium is affected by density, wavelength and temperature :)

(Good luck on your test and mark me brainliest if this helps)