Help with 15 - 17 please!

Answer:

3N to the right

Explanation:

Answer:

200 J

Explanation:

Given that,

Force, F = 20 N

Distance covered in the direction of force, d = 10 m

We need to find the effort made by Mrs. Lasarati. It  will be given by :

W = Fd

W = 20 N × 10 m

W = 200 J

So, the required effort made by Mrs. Lasarati is 200 J.

Answer:

237,825 J

Explanation:

saitama is the strongest

Answer:

C. [tex]6.9\times 10^2\ \text{N}[/tex]

Explanation:

[tex]\text{Supplied force}=2\times 10^2\ \text{N}[/tex]

M = Mechanical advantage = 3.43

Mechanical advantage is given by

[tex]M=\dfrac{\text{Weigh of crate}}{\text{Supplied force}}\\\Rightarrow \text{Weigh of crate}=M\times \text{Supplied force}\\\Rightarrow \text{Weigh of crate}=3.43\times 2\times 10^{2}\\\Rightarrow \text{Weigh of crate}=6.86\times 10^2\ \text{N}\approx 6.9\times 10^2\ \text{N}[/tex]

The weight of the crate is [tex]6.9\times 10^2\ \text{N}[/tex].

Answer:

Metamorphic

Explanation:

Metamorphic rocks form when rocks are subjected to high heat and high PRESSURE.

Answer:

180000N

Explanation:

Given parameters:

Acceleration  = 600m/s²

Mass  = 300kg

Unknown:

Force  = ?

Solution:

From Newton's second law of motion;

    Force  = mass x acceleration

Force  = 300 x 600 = 180000N

Answer:

Heat _Energy___ the internal energy of the system or is transformed into _formula______

Explanation:

The first law of thermodynamics describes how the heat added to a system is conserved. Heat the internal energy of the system or is transformed into, or both. Heat is just transformed, not created or destroyed.

Answer:

sorry for the late.... if u have queries comment me

Answer:

D. F = 24000[N]

Explanation:

To be able to calculate the force we must first find the pressure at the bottom of the tank. By means of the following equation:

[tex]P=Ro*g*h[/tex]

where:

Ro = density of the liquid = 800 [kg/m³]

g = gravity acceleration = 9.81 [m/s²]

h = elevation = 1.2 [m]

[tex]P=800*9.81*1.2\\P=9417.6[Pa][/tex]

Pressure is defined as the relationship between Force on the area.

[tex]P=F/A\\F=9417.6*2.5\\F = 23544 [N] = 24000[N][/tex]

Answer:

Sodium chloride, regular table salt, is also known as the mineral halite.

...

Follow-Up Questions:

Find sodium and chlorine on The Periodic Table of the Elements. ...

NaCl is known as an ionic compound. ...

Chlorine is known as a diatomic molecule.

Answer:

m = 80 kg

Explanation:

p = m × v

200 = m × 2.5

2.5m = 200

m = 200/2.5

m = 80 kg

Answer

The frequency and the period are 45 cycles/second and 0.023 seconds

Explanation:

The frequency of the engine is given by :

[tex]f=\dfrac{rpm}{60}[/tex]

We have, the engine increases its performance from zero to 2700 rpms.

Frequency,

[tex]f=\dfrac{2700}{60}\ \text{cycles per second}\\\\f=45\ \text{cycles per second}[/tex]

The time period of the engine is given by :

T = f/f

So,

[tex]T=\dfrac{1}{45}\ s\\\\T=0.023\ s[/tex]

Hence, the required frequency and the period are 45 cycles/second and 0.023 seconds respectively.

Answer:

I wants to be a successful person because is wants to stay happy life and I don't wants

Answer:

Explanation:

Try using Density calculator I think it will work

Answer:

Exons

Explanation:

The sections of DNA (or RNA) that code for proteins are called exons

Answer:

P = 53375[W]

Explanation:

First, we must use the following equation of kinematics, which allows us to calculate the acceleration value.

[tex]v_{f}=v_{o}+a*t[/tex]

where:

Vf = final velocity = 34 [m/s]

Vo = initial velocity = 27 [m/s]

a = acceleration [m/s²]

t = time = 6 [s]

Now replacing:

[tex]34=27+a*6\\a=1.167[m/s^{2} ][/tex]

Now we must use Newton's second law, which tells us that the sum of forces is equal to the product of mass by acceleration. In this way, we have the following equation.

ΣF =m*a

where:

F = force [N]

m = mass = 1500 [kg]

a = acceleration = 1.167 [m/s²]

[tex]F=1500*1.167\\F=1750[N][/tex]

Power is defined as the product of force by speed. But we have two speeds, the initial and the final. We must use the average speed to be able to estimate the power needed.

[tex]V_{average}=\frac{34+27}{2} =30.5[m/s][/tex]

And the power:

[tex]P=F*V_{average}\\P=1750*30.5\\P=53375[W][/tex]

Answer:

The mechanical energy of the airplane is 100,500 joules

Explanation:

The given parameters are;

The mass of the airplane = 10 kg

The height at which the airplane is located = 1000 meters

The potential energy of the airplane, P.E. = 100,000 joules

The speed of the airplane = 10 m/s

The kinetic energy of the airplane, K.E. = 500 joules

The Mechanical Energy, M.E. = The Potential Energy, P.E. + The Kinetic Energy, K.E.

M.E. = P.E. + K.E.

∴ M.E. = 100,000 joules + 500 joules = 100,500 joules

The mechanical energy of the airplane, M.E. = 100,500 joules.

Answer:

brainliest please

Explanation:

The answer would be static electricity

Answer:

the acceleration of the car is 1.167 m/s²

Explanation:

Given;

initial velocity of the race car, u = 5 m/s

final velocity of the race car, v = 12 m/s

time to finish the race, t = 6 s

The acceleration of the car is calculated as;

a = (v - u) / t

a = (12 - 5) / (6)

a = 1.167 m/s²

Therefore, the acceleration of the car is 1.167 m/s²

Answer:

1.167 m/s^2

Explanation:

Given that a race car is accelerating at 5m/s and then speeds up to a final velocity of 12 m/s if the race car driver finished this let of the race in 6 seconds what was the car's acceleration ?

From the question, the following parameters are given

Initial velocity U = 5 m/s

Final velocity V = 12 m/s

Time t = 6 s

According to the definition of acceleration:

Acceleration = change in velocity per time taken.

I.e

Acceleration =( V - U)/ t

Acceleration =( 12 - 5 )/6

Acceleration = 7/6

Acceleration = 1.167 m/s^2

Therefore, acceleration is 1.167 m/s^2

Answer:

B

Explanation:

please mark me brainiest

Answer:

248.5Hz or 251.5Hz

Explanation:

Given :

Beat frequency, Fbeat = 1.5 Hz

Frequency of string 1, f1 = 250 Hz

Frequency of string 2, f2 =?

Recall:

Fbeat = |f1 - f2|

1.5 = 250 - f2

f2 = 250 - 1.5

f2 = 248.5 Hz

OR

- Fbeat = |f1 - f2|

- 1.5 = 250 - f2

f2 = 250 + 1.5

f2 = 251.5 Hz

Hence, the two possible frequencies of the other string are 248.5Hz or 251.5Hz

Answer:

We conclude that the change in momentum of a body is equal to the impulse experienced by a body.

Explanation:

Considering the equation

F • t = m • Δ v

Here,

m • Δ v is basically a change in momentum of a body which is equal to the mass of the object multiplied by the change in its velocity.

Also,

In the formula, it is clear that the impulse experienced by a body during the collision is basically a change in the momentum of the body.

In other words, the change in momentum of a body is equal to the impulse experienced by a body.

Therefore, we conclude that the change in momentum of a body is equal to the impulse experienced by a body.

Answer:

See explanation

Explanation:

Heat is defined as a form of energy due to temperature difference. Heat is also a measure of the total internal energy of a body.

Heat  has the following effects;

1) Heat causes change of state of a body

2)  Heat changes the temperature of a body

3) Heat causes expansion of a body

4) Heat may alter certain physical properties of a body such as electrical conductivity, density etc

5) Heat causes a change in the pressure and volume of a body

6) Heat may lead to the emission of electrons from metals(thermionic emission)

Answer:

A parallel circuit

Explanation:

there you go

hope that helps

thanx

Answer:

parallel circuit

Explanation: