A dragster crosses the finish line with a velocity of 140m/s . Assuming the vehicle maintained a constant acceleration from start to finish, what was its average velocity for the race?

Answer:

3rd sentence

Explanation:

Answer:

The answer is 0.5m/s²

Explanation:

Acceleration=Force ÷mass

= 5÷10=0.5m/s²

Answer:

91 :)

Explanation:

The positive charge with the highest magnitude is +2 C and this charge would be most strongly attracted by object A.

Opposite charges have the ability to attract each other while, similar charges repel each other.

The given charge of object A is negative, and it will be strongly attracted to a positive charge.

The greater the positive charge, the greater the force of attraction of object A.

From the given options, the positive charge with the highest magnitude is +2 C and this charge would be most strongly attracted by object A.

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Answer:

I = 0.25  AND  T= 4 HOURS, Q = ??  

 multiply  both min  and sec , 240 and 60

we get 1400 sec  

the formula for current is   I = Q/T

substitute the given data in the formula  and simplify it

so , Q = 3600C  

Answer:

A) 60 degrees B) 75 degrees

Explanation:

You use complementary angles to solve this. A complementary angle is when two angles add up to 90 degrees. For A), it says that the angle is 30 degrees. So you can do 90 minus 30 and you get 60. For B), it’s says the angle is 15 degrees. So you do 90 minus 15 and you get 75 degrees.

Explanation:

speed only have magnitude whereas velocity have magnitude and direction

Answer:

25 m/s

Explanation:

First we should define the variables

T=4

Dx = 100

ay=-9.8

ax=0

We can use formula 1 from the BIG 5

x=(v+v0)t/2

By plugging in our variables we can get 100=4(v+v0)/2

Which is 50=v+v0

v=v0 since horizontal acceleration always equals zero

so 2v0 = 50

v0 = 25

Answer:

c. Total energy

Explanation:

An "orbit" is a path for an object to follow. An example of an object is the "satellite."

At certain points in the orbit, the satellite increases its speed and decreases its speed in relation to the gravity caused by the Earth. As it moves farther away from the Earth, its speed slows down. So, this means that the kinetic energy changes. It also gains and loses height which is responsible for the changes occurring regarding potential energy. This is true for elliptical motion of satellites.

However, the total mechanical energy (TME) of the satellite remains the same or is unchanged (elliptical/circular).

Answer: Topsoil

Explanation:

Bio

Answer:

topsoil

Explanation:

The time taken for the BB to reach its maximum height is 1.5 seconds.

Time can be defined as the measure of duration or period of past, present or future event.

To calculate the time it will take BB to reach the maximum height,

la we use the formula below

Formula:

Where:

Make t the subject of the equation

From the question,

Given:

Substitute these values into equation 2

Hence, The time taken for the BB to reach its maximum height is 1.5 seconds.

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Answer:

The less energy a wave has, the smaller the amplitude

Explanation:

Hope this helps!!!

Blake can determine the center mass by dividing the product of less dense and its position by the sum of the two end densities.

The center mass of an object is the point on the object where the weighted relative position of the distributed mass sums to zero.

Blake can determine the location of the center mass as follows;

[tex]C_{xm }= \frac{\rho_1 (0) + \rho(x)}{\rho_1 + \rho_2} \\\\C_{xm }= \frac{\rho(x)}{\rho_1 + \rho_2}[/tex]

Thus, Blake can determine the center mass by dividing the product of less dense and its position by the sum of the two end densities.

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Answer:

Explanation:

0m x96 would put as an mass of 900 into 0 so there for your answer would be 0

Answer:

Explanation:

Let when cat reaches the point L distance from the right end , the plank starts turning about the left sawhorse.

The weight of the plank will at at middle point , ie at 2 m from the right end .

The plank will turn about the left sawhorse . Taking torque about this point of weight of the plank and weight of the cat , we have

2.5 g x ( L - 2.4 ) = 6 x g x ( 2.4 - 2.0 )

2.5 L - 6 = 14.4 - 12

2.5 L = 8.4

L = 3.36

position from left sawhorse = 3.36 - 2.4 = .96 m to the left of left sawhorse.

Answer:

t = 0, p = 12.0, v = 6.00

t = 20, p = 112, v = 56.0

t = 25, p = 62.0, v = 31.0

Explanation:

Impulse = change in momentum

J = Δp

FΔt = mΔv

The impulse equals the area under the F vs t graph.

At t = 0 s, the initial velocity is 6.00 m/s, so the momentum is:

p = (2.00 kg) (6.00 m/s)

p = 12.0 kg m/s

From t=0 s to t=20 s, the impulse is:

J = (20 N) (5 s) + ½ (20 N) (5 s) + ½ (-10 N) (10 s)

J = 100 Ns

So the new momentum is:

p = 12.0 kg m/s + 100 kg m/s

p = 112 kg m/s

And the new velocity is:

v = (112 kg m/s) / (2.00 kg)

v = 56.0 m/s

From t=20 s to t=25 s, the impulse is:

J = (-10 N) (5 s)

J = -50 Ns

So the new momentum is:

p = 112 kg m/s − 50 kg m/s

p = 62.0 kg m/s

And the new velocity is:

v = (62.0 kg m/s) / (2.00 kg)

v = 31.0 m/s

Answer:

B. The effect that a magnetic field has on an object depends on the material of the object.

Explanation:

Just makes sense

Based on the data given in the table, the best argument the student can make about magnetic fields is that b. The effect that a magnetic field has on an object depends on the material of the object.

Certain objects have properties that make them easier to be magnetizable than other materials. Crayons and wooden toothpicks for instance, are not magnetizable.

The conclusion that can be made therefore is that the effect of a magnet on an object depends on the material of the object.

In conclusion, option B is correct.

Find out more on magnetic fields at https://brainly.com/question/14411049.

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

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

where

f is the force

m is the mass

From the question we have

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

We have the final answer as

Hope this helps you

Answer:

It will remain in straight-line motion at constant speed until acted on by an

external force. Moreover, it'll not only tend to do that ... it'll actually do it.

Explanation:

Answer:

you had probably died from the impact

Explanation:

because you got rolled over you would probably died due to your organs being damage and wouldn't function properly

The name of the area around a charged object where the object can exert a force on other charged objects will be the electric field. Option A is correct.

An electric field is an electric property that is connected with any location in space where a charge exists in any form. The electric force per unit charge is another term for an electric field.

The electric field formula is as follows:

E = F /Q

Where,

The electric field is denoted by the letter E.

F is the electric force

The charge is Q.

The name of the area around a charged object where the object can exert a force on other charged objects will be the electric field.

Hence option A is correct.

To learn more about the electric field refer to the link;

https://brainly.com/question/26690770

Answer:

2.14 A

Explanation:

L = 2.5 mm, N = 1300, B = 1.4 T, find I

B = μ₀N*I/L

so I = B*L/(μ₀N) = 1.4 * 0.0025/(4π x 10⁻⁷ x 1300) = 2.14 A

Answer:

Explanation:

e Sun and planets began to form in a rotating cloud of nebular gas and dust. These materials eventually clumped together with a hot protosun at the center and chunks of planetesimals rotating around it. Through repeated collisions, the planetesimals grew into protoplanets, and eventually the solar system came about.

The sequence of the solar system formation is started from sun and the planet's origination 4.6 billion years ago from the solar nebula, a cloud of gas and dust.

The solar system consists of the planet's satellites, as well as numerous comets, asteroids, and meteoroids, as well as the interplanetary medium.

The Sun and planets formed in a revolving cloud of nebular gas and dust. These components finally clumped together, creating a hot proton in the middle with fragments of planetesimals orbiting around it.

Planetesimals developed into protoplanets as a result of repeated collisions, and the solar system finally formed.

Hence,the sequence of the solar system formation is started from sun and the planet's origination 4.6 billion years ago from the solar nebula, a cloud of gas and dust.

To learn more about the solar system, refer to the link;

https://brainly.com/question/1207587

#SPJ2

Hi there!

1.

Since the two resistors are in series, we can simply add:
[tex]R_T = R_1 + R_2 + ... R_n[/tex]

[tex]R_T = 20 + 5 = \boxed{25 \Omega}[/tex]

2.

In series, the potential difference of each resistor (lamp) ADDS UP. We can begin by finding the current through the circuit using Ohm's law:
[tex]V = IR\\\\I = \frac{V}{R_T}[/tex]

Plug in the values:
[tex]I = \frac{50}{25} = 2 A[/tex]

Now,

we can use Ohm's law to find the individual voltage for each lamp.

20 Ohm lamp:
[tex]V = 2 * 20 = \boxed{40 V}[/tex]

5 Ohm lamp:
[tex]V = 2 * 5 = \boxed{10 V}[/tex]

3.

To solve, we can use the power equation.

[tex]P (\text{Watts})= IV[/tex]

Plug in the values for each.

20 Ohm lamp:
[tex]P = 2 * 40 = \boxed{80 W}[/tex]

5 Ohm lamp:
[tex]P = 2 * 10 = \boxed{100 W}[/tex]

Answer:

a = 0.0505 [m/s^2]

Explanation:

In order to solve this formula we must use the following formula of kinematics.

[tex]x=(v_{o} *t)+(\frac{1}{2} )*a*t^{2}[/tex]

where:

x = distance = 50000 [m]

Vo = initial velocity = 0

a = acceleration [m/s^2]

t = time = 23 [min] = 1380 [s]

Note: the positive sign in the above equation shows that the car accelerates.

50000 = (0*1380) + (0.5*a*1380^2)

a = 0.0525 [m/s^2]

But we can calculate the acceleration using the following formula:

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

where:

Vf = final velocity = 67 [m/s]

67 = 0 + (a*1380)

a = 0.0485 [m/s^2]

We can see that by means of kinematics and with the given values we can find two values of accelerations, however, we can determine the average acceleration, by means of the mathematical average.

a = (0.0485 + 0.0525) / 2

a = 0.0505 [m/s^2]

Answer:

similarities: They are both members of an action reaction-pair and are produced by electromagnetic forces between the particles. In the case of tension a force is acting to separate the molecules from their equilibrium position, the tension is the resistance to this separatio; that is the electrical attraction among the charged particles that opposes the action of the applied force. In the case of the normal force when gravity pulls an object downward, the electrons of the two surfaces are pulled so close that they mutually reject each other. This rejection between the electrons of the 2 surfaces produces the normal force, acting in opposition to gravity.

Differences: The main difference between tension and force is the direction of force. ... Tension is a force pulling something apart, such as a force pulling apart on the ends of a rope. You often calculate tension in pulley problems. A force is a more general term applying to pushing or pulling on something.

Explanation:

i hope this helps you :)

Answer:

D/B ahs units of  Length over Time

Explanation:

Notice that B is multiplying "x" (displacement) as argument of the sine function, therefore it has to have units of the reciprocal of Length.

Also the constant D is multiplying "t" as argument of the sine function, and as such, it must have units of the reciprocal of time.

Therefore, the quantity D/B must have units of Length over Time.