In object moving with a speed of 21M/S and has a kinetic energy of 140j, what is thr mass of the object

Answer:

300 Joules

Explanation:

Just use the Work formula:

W = F . D

W = 10 . 30

W = 300 Joules

Answer:

c

Explanation:

Answer:

It's 1.5 meters

Explanation:

plato

Answer:

1. 22092.31 m

2. 3188.78 m

3. 25.51 s

Explanation:

Let's split this projectile's motion into its horizontal and vertical components:

Since this projectile is in constant acceleration (9.8 m/s² vertically downwards and 0 m/s² horizontally), we can use the kinematic equations for constant acceleration.

Let's find the time it takes for the projectile to reach its greatest height first by using our knowledge that, at the top of its trajectory, the projectile will have a final velocity of 0 m/s before changing its direction and falling down.

Therefore, we can use the equation that contains the variables a_y, v_f, v_i, and t in order to solve for time t.

This equation is: v = v_0 + at, where v is the final velocity, v_0 is the vertical component of the initial velocity, a is the acceleration in the y-direction, and t is the time of flight of the projectile.

Plug known values into the equation:

Subtract 500 * sin(30) from both sides of the equation.

Divide both sides by -9.8.

The time it takes the projectile to reach its greatest height is 25.51 seconds.

Now we can use this time t to find the greatest height of the object, which will be the displacement in the y-direction at t = 25.51 seconds.

We can use this equation that contains the variables displacement (Δx), initial velocity (v_0), acceleration (a_y), and time (t):

Plug known values into the equation.

The displacement in the y-direction is 3188.78 m at half the time t, meaning that this is the greatest height of the projectile.

Now we can find the horizontal range of the projectile by using the same equation, but this time in the x-direction.

We will use the x-component of the initial velocity and the acceleration in the x-direction, which is always 0 m/s² assuming air resistance is negligible. Note that the time we have above (25.51 sec) is only half the total time, so we will use double this time (51.02 sec).

The horizontal range of the projectile is 22092.31 m.

Answer:

No

Explanation:

No, Marc did not make it on time for dinner.

The time duration between 12:00 and 18:00 is 6 hours.

Total distance that needs to be covered from his house to his mum's house and back = 300 miles x 2 = 600 miles

Time that would be needed to cover 600 miles to his mum's house at an average speed of 45 mph = distance/speed

    = 600/45

            = 13.33 hours

The required time to cover the distance by Marc is approximately 13.33 hours. If he leaves the house by 12:00, he will definitely not get back 6 hours after. Hence, he could not have made it for dinner.

Answer:

Answer:

Vacculoes, vesicles

Explanation:

Organelles and other structures within the cells have vesicles collectively referred to as the endo-membrane system. The Lysosomes pack up the substances, and the vesicles go through the porsous membrame and secrete the substances.

None of these answers are correct...

Applying the law of universal gravitation, we have

F = G m₁ m₂ / R²

where

G = 6.67 × 10⁻¹¹ N•m²/kg²

m₁ = 1.7 × 10³⁰ kg

m₂ = 5.5 × 10²⁰ kg

R = 2 × 10⁵ m

→   F = (6.67 × 1.7 × 5.5)/2² × 10⁻¹¹⁺³⁰⁺²⁰⁻¹⁰ N

→   F ≈ 15.59 × 10²⁹ N

→   F ≈ 1.6 × 10³⁰ N

Answer:

D) Z,X,Y,W

Explanation:

TOOK THE QUIZ MATE, TOOK THE MF QUIZ

Answer:

D

Explanation:

edge 21

Answer:

From highest speed to lowest speed:

A, C, B

Explanation:

On a position time graph, the slope of a line would represent the velocity, since the rate of change represents how many meters traveled in the given time.

The larger the slope, the faster the velocity; the steeper the line, the faster the speed.

Since line B is negative, you know that velocity is negative so it automatically has the lowest speed.

Out of lines A and C, since A is steeper, you know that A has a faster speed.

In conclusion:

A is the fastest

C is the middle

B is the slowest

Answer:

P.E.= 12.348 joules

K.E.=1.26 joules

Explanation:

Answer:

boron and neon.

Explanation:

two element compounds are usually ionic when one element is a metal and the other is a non-metal. boron is a metal, whereas neon is a non-metal. i might be wrong but hope it helps.

Answer:

The value is  [tex]I= 0.0597\ A[/tex]  

Explanation:

From the question we are told that

    The length of the solenoid is [tex]l = 15 \ cm = 0.15 \ m[/tex]

     The number of turns is  [tex]N = 100[/tex]

      The  magnetic field of the earth is  [tex]B = 5* 10^{-5} \ T[/tex]

Gnerally magnetic field is mathematically represented as

          [tex]B = \frac{\mu_o * N * I }{ l }[/tex]

=>        [tex]I= \frac{Bl}{ \mu_o *N }[/tex]

=>        [tex]I= \frac{ 5 *10^{-5} * 0.15}{4\pi *10^{-7} *100 }[/tex]  

=>        [tex]I= 0.0597\ A[/tex]  

Answer:

dₓ = 1.35 m

dy = 1.86 m

Explanation:

In order to find the vertical and horizontal components of the displacement, we can assume a right triangle. Such that, the length of string is the hypotenuse, making and angle of 54° with the base of triangle. The base is the horizontal component of displacement. And the perpendicular is the vertical component of displacement. Therefore:

[tex]d_{x} = d\ Cos\ \theta[/tex]

where,

dₓ = horizontal component of displacement = ?

d = resultant displacement = 2.3 m

θ = angle between displacement and ground = 54°

Therefore,

[tex]d_{x} = (2.3\ m)\ Cos\ 54^0[/tex]

dₓ = 1.35 m

For vertical component of displacement:

[tex]d_{y} = d\ Sin\ \theta\\d_{y} = (2.3\ m)\ Sin\ 54^0[/tex]

dy = 1.86 m

Answer:

a counterclaim

Explanation:

authors purpose is what an author wrote somthing for

opinion is someones thoughts or "side" on a argument

an arguement is a battle of opinions if that makes sense

Answer:newtons second law

Explanation:

To get something to accelerate you have to apply a pull force . if the mass increase a grater pull is required

The law that explains the fact that a heavier truck takes a longer time to stop is Newton's law of inertia.

According to Newtons first law of motion also called the law of inertia, a body will continue in a state of rest or uniform motion unless it is acted upon by an external, unbalanced force.

This law explains the reluctance of heavier objects to move or stop. The law that explains the fact that a heavier truck takes a longer time to stop is Newton's law of inertia.

Learn more: https://brainly.com/question/14281129

Answer:c=-56+ 8

Explanation:

Answer:

change in temperature is a decrease by 268.734 K

Explanation:

We are given;

Temperature: T1 = 0°C = 273 K

Internal diameter; d1 = 8mm

Final diameter; d2 = 1 mm

To solve this, we will use Charles law formula since pressure is constant.

Thus;

V1/T1 = V2/T2

Where T2 is the final temperature.

Now, V1 and V2 are volume

Volume is given by: V = area x height

We are told the cross section is equal except for the diameter.

Thus;

V1 = A1 × h

V2 = A2 × h

Thus;

(A1 × h)/T1 = (A2 × h)/T2

h will cancel out and making T2 the subject, we have;

T2 = (A2 × T1)/A1

A2 = π(d2)²/4

A1 = π(d1)²/4

Thus;

T2 = [(π(d2)²/4) × T1]/(π(d1)²/4)

π and 4 will cancel out to givw;

T2 = ((d2)²× T1)/(d1)²

T2 = (1² × 273)/8²

T2 = 273/64

T2 = 4.266 K

Thus;

Change in temperature = T2 - T1 = 4.266 - 273 = -268.734 K

Thus, change in temperature is a decrease by 268.734 K

Answer:

Mantlee

Explanation:

Answer:

Chromatin is a mass of genetic material composed of DNA and proteins that condense to form chromosomes during eukaryotic cell division. Chromatin is located in the nucleus of our cells . The primary function of chromatin is to compress the DNA into a compact unit that will be less voluminous and can fit within the nucleus.

I hope this helps

Explanation:

Answer: Me again! Chromatin is a complex of DNA and proteins that forms chromosomes within the nucleus of eukaryotic cells. Nuclear DNA does not appear in free linear strands; it is highly condensed and wrapped around nuclear proteins in order to fit inside the nucleus. Chromatin exists in two forms.

Explanation: Hope this helps! Happy Holidays!

Answer:

The final speed of the bicyclist is 15.44 m/s.

Explanation:

Given;

initial velocity, u = 0

time of motion, t = 4.8 s

distance covered, d = 37.0 m

The acceleration of the bicyclist is calculated as;

d = ut + ¹/₂at²

37 = 0 + ¹/₂(4.8)²a

37 = 11.52a

a = 37 / 11.5

a = 3.22 m/s²

The final speed of the bicyclist is given as;

v² = u² + 2ad

v² = 0 + 2(3.22)(37)

v² = 238.28

v = √238.28

v = 15.44 m/s

Therefore, the final speed of the bicyclist is 15.44 m/s.

Hello!!

For calculate the volume of the liquid, lets applicate the formula:

[tex]\boxed{V=m/ p }[/tex]

[tex]\textbf{Being:}[/tex]

[tex]\sqrt{}[/tex] V = Volume = ?

[tex]\sqrt{}[/tex] m = Mass = 6 g

[tex]\sqrt{}[/tex] p = Density = 25 g/ml

[tex]\text{Let's \textbf{replace} and resolve: }[/tex]

[tex]V = 6 \ g / 25 \ g / m l[/tex]

[tex]V = 0,24 \ m l[/tex]

[tex]\textbf{Result:}[/tex]

The volume of the liquid is 0,24 ml.

Answer:

c

Explanation:

because the other would not make sense

concave

Explanation:

convex would magnify

Answer:

A

Explanation:

Hopefully this helps