can somebody helppp me pls thank you:)))))​

According to Newton's First Law of Motion, a body at rest will continue to be at rest unless another force acts on it, and a body moving at a constant speed will continue to move in a straight path unless another force acts on it.

A body must be subject to an external force in order to accelerate (or decelerate) or alter its direction of motion. Net forces or imbalanced forces are other names for external forces.

Inertia is the quality that a body possesses that prevents it from moving when at rest or from speeding up or slowing down while in motion. The mass, or quantity of substance in a body, directly relates to inertia. A body has more inertia the more mass it possesses.

According to the Second Law of Motion, if an imbalanced force applies on a body, the body will accelerate (or decelerate), changing its speed. It is possible to state that a body at rest is thought to have zero speed ( a constant speed). Therefore, an imbalanced force is any force that causes a body to move. Additionally, an imbalanced force is any force that causes a body to move slowly or quickly, such as gravity or friction. The formula below can be used to demonstrate this law.

F= ma

The imbalanced force is F.

The object's mass is m.

The force's acceleration, a, is measured.

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Answer:

27.82m

Explanation:

The distance of the cyclist can be calculated using the formula:

S = ut + 1/2 (at^2)

Where; S = distance

u = initial velocity

a = acceleration

t = time

However, to find acceleration, we use:

a = v - u/t, where v is the final velocity

According to this question, u = 4.2m/s, v = 6.3m/s, t = 5.3s

a = 6.3 - 4.2 / 5.3

a = 2.1/5.3

a = 0.396m/s^2

Hence, using S = ut + 1/2 (at^2)

S = (4.2 × 5.3) + 1/2 (0.396 × 5.3 × 5.3)

S = 22.26 + 5.56

S = 27.82

Therefore, the cyclist travel in 27.82m

Answer:

a) 2.5s

b)24.2m/s

Explanation:

a) s = ut +1/2gt^2

Where u=0

Make t the subject and solve

b) v^2=u^2+2gs

Where u =0

Make v the subject and solve

Because the mass is constant, if the velocity is increased, the kinetic energy must also increase.

Answer:

Option: 3 Speed √

is the right answer

Explanation:

D = M/V

We rearrange this equation to get V = M/D

So 14 g/7 g/mL,

the grams cancel out, and we're left with 2 mL.

D is the answer.

The volume of water displaced by the body is 2 ml.

Volume of a body is amount of space occupied by a body. As it has only magnitude (no direction), it is a scalar quantity. SI unit of volume is [tex]m^{3}[/tex].

Now, it is given that,

Mass of the object  is 14 grams.

Density of the object is 7 g/ml.

So, volume of the object will be = (mass of the object)/(density of the object)

= 14 grams/(7 g/ml).

= 2 ml.

When the object is placed in water, it sinks. That's why, volume of water displaced by it is equal to the total volume of the body.

Hence, The volume of displaced water is 2 ml.

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Answer:

B)The air has more thermal energy

Answer:

its B

Explanation:

THATS THE ANSWER TRUST ME

Answer:

Yes

Explanation:

Yes, displacement can be zero even if the distance is not zero. For example, when a body is thrown vertically upwards from a point A on the ground, after some time it comes back to the same point A.

Yellow has the lowest density. I took the test and got this question correct. :)

The object represented by the yellow graph has the lowest density.

It is defined as the mass per unit volume of the body. Mathematically -

ρ = M/V

Given is a graph showing the variation of the mass with volume.

All of the given graphs are straight lines. The slope of the line determines the proportionality constant or density of the four objects whose graphs are plotted. The graph with the maximum slope will have the highest density and with the minimum slope has lowest density. It can be seen that the yellow graph has the smallest slope (slope is the angle any straight line makes with x - axis). So it will have the lowest density.

Therefore, the object represented by the yellow graph has the lowest density.

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Answer:

The type of wave interaction occurred is destructive interference

Explanation:

Given that,

Max and Jimmy jump at same time.

Wave crest makes by Max and wave trough makes by Jimmy.

We need to find the type of wave interaction occurred

According to given data,

We know that,

If the wave crest and wave trough are interacted to each other then the interaction is destructive interference.

If the wave crest and wave trough are interacted with crest and trough then the interaction is constructive interference.

So, we can say that if the wave crest and wave trough are interacted to each other then the interaction is called destructive interference

Hence, The type of wave interaction occurred is destructive interference

Answer:

destructive interference

Explanation:

Answer:

150

Explanation:

work done = constant force x distance moved in the direction of force

W = F x S

(UNITS: J = N x m)

50 x 3 = 150

Answer:

63.01 kg is the mass of the student whose weight is 618 Newton

Mass of student is 63 kilogram (Approx.)

Given that;

Weight of a student = 618 Newton

Find:

Mass of student

Computation:

We know that;

Gravitational acceleration g = 9.8 m/s²

So,

Mass  = Weight / Gravitational acceleration

Mass of student = 618 / 9.8

Mass of student = 63.06

Mass of student = 63 kg (Approx.)

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Work

In physics work is said to be done when a force acting on a body displaces it through a certain distance. The work by a constant force is measured by the dot product of force will displacement.

i.e. W = F.S or W = F S cosq …(1)

where F = force and S = displacement

And q = angle between F and S.

Hope this helps! <3

Answer:

Because they memorized the keys

Or their just used to using a keyboard

Explanation:

Answer:

mnnnnnbmbmmmmnnmmmmmmnnnnnnmmm.mm nooooo

Explanation:

awer some folom myy thans for dog

Momentum can be calculated by multiplying the mass of an object by the velocity of an object. Thus, the correct option is C.

The momentum is a quantity which can be defined as the product of the mass and velocity of an object. It is an example of standard mechanical quantity. Momentum is a vector quantity, this means it possess both a magnitude and a direction. If "m" is an object's mass and "v" is its velocity, then the object's momentum p is:

p = m × v

The examples of momentum is whenever we toss a ball at someone as well as it smacks them square in the face. It indicates how difficult it would have been to stop the ball.

Therefore, the correct option is C.

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Answer:

kinematic eq.  d = Vi*t + 1/2a*[tex]t^{2}[/tex]

Explanation:

Vi=0

d=1/2 a*[tex]t^{2}[/tex]

d= 1/2(9.8)[tex]0.9^{2}[/tex]

d=3.969 m

The distance from which the object falls is 393.9 meters.

Given that, an object falls from a high building and hits the ground in 9.0 seconds and air resistance = 0

So the distance can be calculated by the formula given below.

[tex]s = vt + \dfrac{1}{2} at^2[/tex]

Where, [tex]s[/tex] is the distance in meters, [tex]t[/tex] is time (in seconds) taken by the object in motion, [tex]a[/tex] is the acceleration of the object in meter per second square and [tex]v[/tex] is  the final velocity in meter per second.

In this case, object falls from high building to the ground so the final velocity would be zero. Gravitational acceleration is -9.8 meter per second square.

Substituting the values in the above formula,

[tex]s = (9.0\times0) + \dfrac{1}{2}(-9.8\times(9.0)^2)\\s = 0 + (-9.8\times81\times0.5)\\s = 396.9 \;\rm m[/tex]

The distance from which the object falls is 393.9 meters.

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Answer:

Explanation:

In this unit of measurement for distance or length, the units are arranged from the least to the largest unit i.e

mm < cm < m < km

Where mm is millimeter, cm is centimeter, m is meter and km is kilometer.

Hence, the appropriate unit to be used depends on how small or wide the length/distance being referred to is. For instance, the length of a stapler pin should be measured in millimeter while the length of a pen should be measured in centimeter. The appropriate measurement can be determined by determining the closest unit the value falls into. For instance, there is no need to refer to a length as 1000 cm when it can be referred to as 10 m (since 100 cm equals 1 m)

1. Width of a physics book should be measured in centimeters (this is similar to length of a pen).

2. Distance from New York to Utah should be measured in kilometers (Distance between far cities or states are measured in kilometers).

3. Length of a fingernail should be measured in millimeters (this is similar to the length of a stapler pin)

4. Length of hallway should be measured in meters (This is generally larger than centimeter but lesser than kilometer)

5. Height of a mountain should be measured in kilometers (This is usually a very long distance from the earth surface)

6. Length of a fork should be measured in centimeters (This is similar to the length of a pen).

7. Distance between cities should be measured in meters (except the distance is far apart, distance between close cities are measured in meters)

8. Width of the eyeball should be measured in millimeters (similar to the length of a stapler pin and fingernail).

Answer:

As we know that liquid pressure is depend upon the depth of liquid where the downstair tap has more depth so water come out with more pressure wheres the upstairs tap has less depth so water come out with low pressure so

Answer:

static friction is developed between 2 surfaces in state of rest so i think answer is c.Even though the wheel is in motion, the patch of the tire in contact with the ground is stationary relative to the ground, so it is static rather than kinetic friction.

The static friction is the hindrance to an object which is trying to move from stationary state. Among the given options, the example for static friction is pushing the box that is at rest.

The friction that occurs when people attempt to move a stationary object on a surface without actually causing any relative motion between the body and the surface.

The static frictional force is self-regulating, which means that it will always be equivalent to and opposite to the force applied. Static friction is zero for an object at rest on a flat table.

Static friction creates an equal and opposite force that keeps the book at rest when you push horizontally with a small force.The static friction force increases to match the force as you push harder.

The maximum static friction force is eventually exceeded, and the book moves. Therefore, option B is correct.

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Answer:

Brick A has more energy because its weight is more, that means that the gravitational pull to the earth will be more if the brick will fall from 30 feet.

Answer:

Explanation:

The mass of the body can be found by using the formula

[tex]m = \frac{f}{a} \\ [/tex]

f is the force

a is the acceleration

We have

[tex]m = \frac{50}{10} \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

3080

Explanation:

Potential energy is the energy stored or contained in a body as a result to its relative position to other objects, an example is an object that is placed at a height above the ground thereby experiencing gravitational energy.

Potential energy = mass × gravity × height

Given that: height = 11.08 m, gravity = 9.81 m/s² and mass = mass of boy + mass of ball = 25.1 + 2.94 = 28.34 kg

Potential energy =28.34 × 9.81 × 11.08 = 3080

Answer:

☆<《HOPE IT WILL HELP YOU 》>☆

Explanation:

The probability of getting 4 is 1

Answer:

1/6

Explanation:

There are 6 faces, and one of them is 4. Therefore the answer is 1/6.

Answer:

Electron movement creates partial charges in different regions of molecules.  

Explanation:

The electrons play a role in the creation of London forces, which are intermolecular forces produced by the movement of the electrons in the atoms and molecules. The distribution of electrons will produce the formation of a temporary dipole, generating a partial charge in the atoms, which can induce a dipole into a subsequent atom (creating again partial charge), and so on.

Hence, the correct option is the second option: Electron movement creates partial charges in different regions of molecules.                      

I hope it helps you!    

The role played by electrons in creating intermolecular forces is that electron movement creates partial charges in different regions of molecules.

Molecules are held together by intermolecular forces. There are several kinds of intermolecular forces such as;

In all the kinds of intermolecular interactions mentioned above, interaction between molecules is made possible by movement of electrons which creates temporary or permanent dipoles in molecules due to partial charges in different regions of molecules.

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Answer:

b

Explanation:

im pretty sure its b

Answer:

4 miles per hour

Explanation:

Your welcome

Answer: I believe it would be "only velocity increases " because the mass is constant, if the velocity is increased, the kinetic energy must also increase.

Answer:

they both increase

Explanation:

kinetic energy is proportional to velocity squared. which mean if kinetic energy goes up the velocity goes up double as much and kinetic energy is exactly proportional to mass so as kinetic energy increases so does mass.