The machine in the figure is ideal and an effort force of
7.0 N just lifts a 14.0 N box situated 0.75 m from the
pivot, what is the distance from the pivot point to
where the effort force is exerted?

Answer:

During the summer, oxygen is supplied by surface winds. M/NPT 16 to 26 0.14 to 0.45 m 1/ 77.80 $ 28 Phone: 418 81-1 Fax: 418 81-2882 SZ5-2025 SZ22-200 SZ2-250 SZ24-00 12.5 x 60 12.5 x 60 12.5 x 60 8 x 10 10 x 15 10 x 20 15 x HI-950 can take measures between 0.1 C to 999.9 C/ F. K, J & T-type: The HI-9551

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A balanced equation demonstrates the conservation of mass by having the same number of each type of atom on both sides of the arrow

Answer:

A. 50 Hz

B. 2 m/s

Explanation:

We'll begin by converting 20 ms to s. This can be obtained as follow:

1000 ms = 1 s

Therefore,

20 ms = 20 ms × 1 s / 1000 ms

20 ms = 0.02 s

Next, we shall convert the value of the wavelength (i.e 4cm) to m. This can be obtained as follow:

100 cm = 1 m

Therefore,

4 cm = 4 cm × 1 m / 100 cm

4 cm = 0.04 m

A. Determination of the frequency.

Period (T) = 0.02 s

Frequency (f) =?

f = 1 / T

f = 1 / 0.02

f = 50 Hz

Therefore, the frequency of the wave is 50 Hz

B. Determination of the velocity.

Wavelength (λ) = 0.04 m

Frequency (f) = 50 Hz

Velocity (v) =?

v = λf

V = 0.04 × 50

v = 2 m/s

Therefore, the velocity of the wave is 2 m/s

Answer:

5 Hz

Explanation:

Given:

Wave velocity ( v ) = 10 m / sec

wavelength ( λ ) = 2 m

We have to calculate Frequency ( f ) :

We know:

v = λ / t [ f = 1 / t ]

v = λ f

= > f = v / λ

Putting values here we get:

= > f = 10 / 2 Hz

= > f = 5 Hz

Hence, frequency of sound is 5 Hz.

Answer:

sorry I need points

Explanation:

IM SO SORRY

Answer:4.62

Explanation:

Acellus

Answer:

Temperature is the degree or intensity of heat present in a substance or object. Thus temperature is not a form of energy.

Explanation:

Answer:

Temperature

Explanation:

Answer:

1498962290

Explanation:

Answer:

[tex]\approx 0.154\:\mathrm{m/s}[/tex]

Explanation:

In all collisions, whether elastic or inelastic, momentum must be conserved. Therefore, we can write an equation using the conservation of momentum:

[tex]m_{c1}v_{c1,i}+m_{c2}v_{c2,i}=m_{c1}v_{c1,f}+m_{c2}v_{c2,f}[/tex]

Solving for [tex]v_{2c,f}[/tex]:

[tex]0.000017\cdot 0.255+0.000040\cdot0=0.000017\cdot (-0.108)+0.000040\cdot v_{c2,f},\\v_{c2,f}\approx \boxed{0.154\:\mathrm{m/s}}[/tex]

*Notes:

-It's important to convert g to kg, as kg is the SI unit of mass

-The negative sign in a velocity measure represents direction

-Since the velocity we solved for is positive, it implies that the direction is to the right

Answer:

If I were a drop of water and present in the ocean or any other aquatic system I should have moved in the water cycle as due to heats the water of the aquatic system such as the ocean becomes hot and evaporated turning into vapour, a gaseous phase of water.

Then vapour colloids with cooler air, and become cooler and convert into drops of water again which is called condensation. Drops of water again get back to the earth surface it can be in the form of rain, snow (ice form of water) termed as precipitation.

The three phases of the water cycle are

---> evaporation ---- > condensation -----> precipitation----

Answer:

the weight of the astronaut on Earth is 1209.88 N

Explanation:

Given;

weight of the astronaut, W = 200 N

acceleration due to gravity on moon, g = 1.62 m/s²

Apply Newton's second law of motion to determine the mass of the astronaut;

F = ma = mg

m = F/g

m = 200 / 1.62

m = 123.457 kg

The weight of the astronaut on Earth is calculated as follows;

F = mg

where;

g is acceleration due to gravity on Earth = 9.8 m/s²

F = 123.457 x 9.8

F = 1209.88 N

Therefore, the weight of the astronaut on Earth is 1209.88 N

Answer:

throughout the room. What does this mean? The heat will spread out.

Explanation:

thank me later

Answer:

300,000,000

Explanation:

Use the speed formula

Speed= wavelength x frequency

Answer:

a super massive blackhole

Answer:

120N

Explanation:

Newton's second law formula: F= ma

given that m = 10 kg, a = 12 m/s^2

F = ma = 10 kg * 12 m/s^2 = 120 kgm/s^2 = 120 N

The force acting on the box is equal to 120N. Therefore, option (A) is correct.

According to Newton's 2nd law of motion, The force acting on an object is equal to mass times the acceleration of that object.

This law tells that the acceleration of a moving body depends upon two variables in which one is the mass of the object which is constant while the other is the force acting on that object. The acceleration of an object increases as the mass of the object is less.

The mathematical equation of the second law of motion can be written as:

F = ma

Given, the mass of the box, m = 10 Kg

The acceleration of the box, a = 12m/s²

We can find the force acting on the box by putting the values a and m:

Force acting on the box, F = 10 ×12 = 120 N

Therefore, the force acting on the box is equal to 120 newtons.

Learn more about Newton's 2nd law of motion, here:

https://brainly.com/question/13447525

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Answer:

my answer is c

Explanation:

the sound waves get closer together, increasing their frequency. This listener hears the pitch of the siren get higher. As the car speeds away from listener B, the sound waves get farther apart, decreasing their frequency.

Answer:

Hey mate.....

Explanation:

This is ur answer.....

The formula to calculate force is: force = mass x acceleration, or F = m x a, where force and acceleration have both magnitude and direction.

Hope it helps!

Brainliest pls!

Follow me! :)

Answer:

Electromagnetic waves are created by oscillating charges (which radiate whenever accelerated) and have the same frequency as the oscillation. Since the electric and magnetic fields in most electromagnetic waves are perpendicular to the direction in which the wave moves, it is ordinarily a transverse wave

Explanation:

Answer:

Electromagnetic waves are created by oscillating charges (which radiate whenever accelerated) and have the same frequency as the oscillation. Since the electric and magnetic fields in most electromagnetic waves are perpendicular to the direction in which the wave moves, it is ordinarily a transverse wave

Explanation:

Explanation:

The Kelvin, Celsius, and Fahrenheit scales are the three temperature scales that are most widely used. In most physical experiments the Celsius scale is used to take common measurements, but the Kelvin scale is used for most calculations.

Did you get the answer?  I need it

Explanation:

the second diagram depicts the phenomenon which is refraction and this stems from light moving from a medium to another......and in this case light moves from a less dense medium to a denser medium hence is refracted away from the normal(the straight line between the medium of air and glass)

PLS GIVE BRAINLY

Diagram B shows the refraction event and this is from light to medium, in this case, the light travels from a slightly narrower area to a compact area and is, therefore, further away from the normal (vertical line between the air and glass).

When a ray of light travels from a dense area to a rare place, it bends away from normal.

Refractive index is also equal to the velocity of light c of a given wavelength in empty space divided by its velocity v in a substance, or n = c/v.

Learn more about refraction here https://brainly.com/question/15838784

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Answer:

D. The bowling ball has greater momentum because its mass is

greater than the mass of the tennis ball.

Explanation:

The momentum of a body is defined as the product of mass and velocity. That is;

p = mv

This implies that the momentum of a body depends both on its mass and velocity respectively.

The question clearly states that the tennis ball and the bowling ball have the same speed and are rolling in the same direction. However, the bowling ball has a larger mass compared to the tennis ball hence it possesses a greater momentum than the tennis ball.

Answer:

The magnitude of the couple is 16.25 Nm.

Explanation:

A couple is a force that always produce a turning effect of objects on which it is applied. It has applications in doors, taps, revolving doors etc. Couple is a two equal but opposite force applied on an object.

couple = force x length

From the given question, the couple acting on the ring can be determined as;

couple = 25 x 0.65

           = 16.25 Nm

The magnitude of the couple is 16.25 Nm.

Answer: 6

Explanation:

Have an awesome amazing day

Answer:

2 plus 2 = 4 AND 1 plus 1 = 2

Explanation:

I guess combine both equations if your detailed instructions allow.

Answer:

Resistance, R = 2.5 Ohms

Explanation:

Given the following data;

Voltage = 10 V

Current = 4 A

To find the resistance;

Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.

Mathematically, Ohm's law is given by the formula;

[tex] V = IR[/tex]

Where;

V represents voltage measured in voltage.

I represents current measured in amperes.

R represents resistance measured in ohms.

Making resistance, R the subject of formula, we have;

[tex] R = \frac {V}{I} [/tex]

Substituting into the equation, we have;

[tex] R = \frac {10}{4} [/tex]

Resistance, R = 2.5 Ohms

Therefore, the resistance of the resistor in the electrical circuit is 2.5 Ohms.

B. It represented African Americans and their struggle for equality.Answer:

Explanation:

Answer:

neutralization

Explanation:

this is because

acid + base ---> salt + water