A net force of 10 N accelerates an object at 5.0 m/s^2. What is the mass of the object? A. 2 kg B. 10 kg C. 5 kg D. 20 kg

Answer:

(a). The average acceleration during segment A is 2 m/s²

(b). The average acceleration during segment B is zero.

(c). The average acceleration during segment C is 4 m/s².

Explanation:

Given that,

A snowmobile moves according to the velocity-time graph ,

(a), We need to calculate the average acceleration during segment A

Using formula of average acceleration

[tex]a=\dfrac{v_{f}-v_{i}}{t_{2}-t_{1}}[/tex]

Where, [tex]v_{i}[/tex] = initial velocity

[tex]v_{f}[/tex] =final velocity

[tex]t_{i}[/tex] = initial time

[tex]t_{f}[/tex] =final time

Put the value into the formula

[tex]a=\dfrac{40-0}{20-0}[/tex]

[tex]a=2\ m/s^2[/tex]

(b). We need to calculate the average acceleration during segment B

Using formula of average acceleration

[tex]a=\dfrac{v_{f}-v_{i}}{t_{2}-t_{1}}[/tex]

Put the value into the formula

[tex]a=\dfrac{40-40}{50-20}[/tex]

[tex]a=0\ m/s^2[/tex]

(c). We need to calculate the average acceleration during segment C

Using formula of average acceleration

[tex]a=\dfrac{v_{f}-v_{i}}{t_{2}-t_{1}}[/tex]

Put the value into the formula

[tex]a=\dfrac{80-40}{60-50}[/tex]

[tex]a=4\ m/s^2[/tex]

Hence, (a). The average acceleration during segment A is 2 m/s²

(b). The average acceleration during segment B is zero.

(c). The average acceleration during segment C is 4 m/s².

Answer:

The weight of the wrench on the Moon is approximately 0.8555 N

Explanation:

On Earth, the acceleration of gravity at sea level is 9.8 m/s^2

then if the wrench weights 5.24 N that means that its mass according to Newton's second law is:

[tex]F = m \, a\\m=\frac{F}{a} \\m=\frac{5.24}{9.8} \, kg\\m=0.5347[/tex]

Now we can use the wrench's mass to find its weight on the Moon, knowing that the acceleration due to gravity there is 1.6 m/s^2:

[tex]W=m\,g\\W=(0.5347) \,(1.6) \,N\\W=0.8555\,\,N[/tex]

Answer:

Explanation:

0.8555

Answer: Please find the answer in the explanation

Explanation: According to the Newton 3rd law of motion which state that;

In every action, there will be equal and opposite reaction.

when the piston of a fountain pen with a nib is dipped into ink and and the air is released by pressing it, a force is applied which act on the molecules of the ink by pushing the molecules. When the force is released, there will be a reaction force by pulling the molecules of the ink into the pen. Thereby the ink fills in the pen. 

Answer:

Hee answer is B

Explanation:

____________.

Answer:

500 kg/m^3

Explanation:

equation ; p = m / v

m = 15,000

v = 30

p = 15,000 / 30, p = 500, add units at the end!

Hope this helps!!

Answer:

Long jewelry

Explanation:

Answer:

t = 200 nm

Explanation:

It is given that,

Wavelength of a light beam is 500 nm

It is reflected constructively from a thin layer of oil having index of refraction 1.25.

The oil floats on the top of water of index of refraction 1.33.

We need to find the minimum thickness of the layer of oil. `

For constructive interference,

[tex]\dfrac{2nt}{\lambda}=m[/tex]

m is 1 for minimum thickness

n is refractive index of oil

t is thickness of layer of oil.

So,

[tex]t=\dfrac{m\lambda}{2n}\\\\t=\dfrac{1\times 500\times 10^{-9}}{2\times 1.25}\\\\t=2\times 10^{-7}\ m\\\\t=200\ nm[/tex]

So, the minimum thickness of the layer of oil is 200 nm.

Answer:

Capacitor

Explanation:

Capacitor ; A capacitor is a passive two-terminal electrical component that can store energy in an electric field electrostatically. It works as a small rechargeable battery that stores electricity. However, unlike a battery, it can charge and discharge in the split of a second. Capacitors are widely used to build different types of electronic circuits.

Answer:

the orbital speed of umbriel is 16,800 km/h

Explanation:

The computation of the orbital speed is shown below

According to the question the Data provided in the question

Uranus mass = 8.68 × 10^25 kg

Distance = 2.66 × 10^8 m

Based on the above information, the orbital speed of Umbriel is

[tex]V = \sqrt{\frac{GM}{R} } \\\\ = \sqrt{\frac{((6.673e-11)(8.68e25)}{2.66e8} }[/tex]

V = 4666 m/s

= 16,800 km/h

Hence, the orbital speed of umbriel is 16,800 km/h

Therefore it can be calculated by applying the above formula

Answer: 4665

Explanation: I got it right after on acellus

Answer: The generation of electricity using fossil fuels.e.g can lead to pollution which cause harm to human beings and environment.

At some times science and technology have been misused or abused by human beings.An example of abuse is the invention of and use of deadly weapons which are harmful to us and environment.

Explanation:

Answer:

The steel needle floats on top of the water because of surface tension. Surface tension happens because the water molecules at the surface of the water are strongly attracted to each other more than they are to the air molecules above them. The water molecules make an invisible skin on the water’s surface that allows things like the needle to float on top of the water.

When soap is added to the water, the water molecules aren't drawn together as strongly. The soap molecules combine with the water molecules and lessen the liquid’s surface tension. The new attractions between the air, water, and soap molecules are weaker than the water-to-water attractions. As a result, the liquid’s surface is no longer strong enough to support the weight of the steel needle and the steel needle sinks.

Answer:

when a Steel Blade is placed on water horizontally just surface tension and the buoyancy will be able to balance the weight of the blade and it will float on the water surface you know the boy and she is not sufficient to make the Steel Blade float now if you are detergent what are the surface tension of water immediately decreases the surface tension no longer be able to balance The Blade and it will sink

hope it helps u

plz mark it as brainlist

Assuming the cannonball is fired horizontally, its horizontal velocity stays at a constant 76 m/s. At the point it hits the ground, it has a speed of 89 m/s, so if its vertical velocity at that moment is [tex]v_y[/tex], we have

[tex]89\dfrac{\rm m}{\rm s}=\sqrt{\left(76\dfrac{\rm m}{\rm s}\right)^2+{v_y}^2}\implies{v_y}^2\approx2145\dfrac{\mathrm m^2}{\mathrm s^2}[/tex]

(taking the negative square root because we take the downward direction to be negative)

Recall that

[tex]{v_f}^2-{v_i}^2=2a\Delta x[/tex]

where [tex]v_i[/tex] and [tex]v_f[/tex] are the initial and final velocities, respectively; [tex]a[/tex] is the acceleration; and [tex]\Delta x[/tex] is the change in position of a body. In the cannonball's case, it starts with 0 vertical velocity and is subject to a downward acceleration with magnitude [tex]g=9.80\frac{\rm m}{\mathrm s^2}[/tex]. So we have

[tex]2145\dfrac{\mathrm m^2}{\mathrm s^2}-0=-2g\Delta y\implies\Delta y\approx-109.44\,\mathrm m[/tex]

(which is negative because we take the cannonball's starting position at the top of the cliff to be the origin) so the cliff is about 109 m high.

Answer:

13.5 m

Explanation:

Given:

v₀ = 0 m/s

v = 9 m/s

a = 3 m/s²

Find: Δx

v² = v₀² + 2aΔx

(9 m/s)² = (0 m/s)² + 2 (3 m/s²) Δx

Δx = 13.5 m

Answer:

4m/s

v=u+at

19=u+3*5

u=4m/s

Answer: Tech B says that total amperage goes up as more parallel paths are added. Who is correct

Explanation: Tech B is correct, because amperage has been known to go up through when more parallel paths are added to a circuit. this is so because when more resistors are introduced in parallel to a circuit, the resulting  resistance of the circuit would decrease, this increases the total current of the circuit. as a result, when more resistors are added in parallel what you get is a change in the direction of flow which is equal to providing more branches which charge can flow through.

Explanation:

Airplanes have more kinetic energy because their bigger. A bug is a living thing well a airplane is not so it (the airplane) has all these machines and engines to make it go faster.

Prove that v² = u² + 2as .

From first equation of motion,

v = u + at

=> at = v - u

=> t = v - u / a

From the second equation of motion, we have

s = ut + 1/2at²

Putting the value of t in above equation , we get:

s = u ( v - u /a ) + 1/2 a ( v - u/a )²

s = uv - u² / a + a( v² + u² - 2uv / 2a²)

s = uv - u² / a + v² + u² - 2uv / 2a

s = 2uv - 2u² + v² + u² - 2uv / 2a

2as = v² - u²

Answer:

[tex] \boxed{ \boxed{ \orange{ \sf{see \: below}}}} [/tex]

Explanation:

[tex] { \underline{ \underline \bold{ \sf{ \blue{ {question \: }}}}}}[/tex]

[tex] \sf{ \bold{ \underline{ \: prove \: that \: {v}^{2} = {u}^{2} + 2as}}}[/tex]

[tex] \underline{ \underline{ { \bold{ \sf{ \purple{solution} }}}}}[/tex]

Let us assume a body moving with an initial velocity ' u '. Let it's final velocity be 'v' after a time 't' and the distance travelled by the body be 's'. We already have ,

[tex] \sf{v = u + at}[/tex] ⇒first equation of motion ( i )

[tex] \sf{s = \frac{u + v}{2} \times t}[/tex] ⇒second equation of motion ( ii )

Putting the value of t from ( i ) in the equation ( ii )

{ v = u + at

or , at = v - u

or, t = v-u / a }

[tex] \sf{s = \frac{u + v}{2} \times \frac{v - u}{a} }[/tex]

[tex] \sf{or \: s = \frac{ {v}^{2} - {u}^{2} }{2a} }[/tex]

[tex] \sf{or \: 2as = {v}^{2} - {u}^{2} }[/tex]

[tex] \sf{ \boxed{ \bold{ \:  ∴ \: \: \: {v}^{2} = {u}^{2} + 2as}}}[/tex] ⇒ forth equation of motion

Hope I helped!

Best regards!!

Answer:

The volume of copper is 2.198 ml

Explanation:

Given;

mass of copper, m = 20 g

density of copper, ρ = 9.1 g/ml

Density is given by;

Density = mass / volume

Volume = mass / density

Volume = (20 g) / (9.1 g/ml)

Volume = 2.198 ml

Therefore, the volume of copper is 2.198 ml

Answer:

false

Explanation:

because they does'nt Work for anything, are like they are not there

Answer:

False

Explanation:

The rules for significant figures are:

A zero before a decimal point is only significant if there's a non-zero digit before it.

For example, in the number 10.5, the zero is significant, because it is between significant digits.

But in the number 0.5, the zero is not significant.

Well you never specified what you're asking... however, this might help you learn the concepts of displacements and magnitude.

:  The official displacement formula is as follows: s = sf - si. s = displacement; si = initial position; sf = final position

magnitude is the quantitative value of seismic energy. It is a specific value having no relation with distance and direction of the epicentre.

the magnitude of a vector in any dimension. For a 2d vector the formula is [math]|z| = \sqrt{x^2+y^2}[/math], where x and y are the x and y components of the vector respectively.

Answer:

Distance= 84 meters

Displacement= 20 meters

Direction= West

Explanation:

The starting position we know is 10 meters eastward and the final position is 18 meters westward. Remember the equation for displacement is Delta=final position minus the initial position. So its 18-10=8. The next equation that we would have to solve would be 22-8, because our starting position is 8 meters and our final position is 22, so final minus the initial remember. Then 22-8=14. Finally the last equation we would have to solve would be 34-12, again our initial position is 12 meters and our final position is 34 meters, therefore the answer to 34-14=20. So we end up with our displacement as 20 meters and don't forget to include the direction, which is West.

Formula: s = d/t

s = speed

d = distance

t = time

Solve using the values we were given.

s = 125/2

S = 62.5km per hour

Best of Luck!

Answer:

Explanation:

We know that , If the frictional force on a system is zero , then the total energy of a system will be conserved.

By using energy conservation

KE₁ +  U₁ = KE₂ + U₂

KE₁=Kinetic energy at location 1

U₁ =Potential energy at location 1

KE₂=Kinetic energy at location 2

U₂=Potential energy at location 2

Therefore, Raymond is thinking in a right way.

The force of friction depends on the area of contact between the two surfaces. As the area of contact is less in the case of rolling than in the case of sliding that's why rolling friction is less than the sliding friction. More the contact area more the friction.

Answer:

0.0238 centimetre

Explanation:

multiply the length value by 100

Answer:

potential energy is the energy that is stored in an object due to its position relative to some zero position. An object possesses gravitational potential energy if it is positioned at a height above (or below) the zero height.

Answer:

B = 0.157 T

Explanation:

Given that,

Length of the solenoid, l = 8 cm = 0.08 m

Number of turns in the wire, N = 2000

Current, I = 5 A

We need to find the strength of the magnetic field at the center of the solenoid. It is given by the formula as follows :

[tex]N=\mu_o nI[/tex], N is number of turns per unit length of solenoid.

So,

[tex]B=4\pi \times 10^{-7}\times \dfrac{2000}{0.08}\times 5\\\\=0.157\ T[/tex]

So, the magnetic field at the center of the solenoid is 0.157 T.

Answer:

16m E

Explanation:

displacement=10m E-6m W+12m E=16m E

Answer:

[tex]60\; \rm m[/tex].

Explanation:

Refer to the velocity-time diagram attached. The displacement of an object over a period of time is equal to the area of the region between the velocity-time plot and the horizontal time axis. That is the case even if the velocity of the object is changing over time.

For the car in this question, the distance travelled in that two seconds should be equal to the trapezoid highlighted in green. That's the region bounded with:

The formula for the area of a trapezoid is:

[tex]\displaystyle \text{Trapezoid Area} = \frac{1}{2}\times \text{Height} \times (\text{Upper Base} + \text{Lower base})[/tex].

For the imaginary trapezoid on this velocity-time graph:

Therefore:

[tex]\begin{aligned}&\text{Displacement} \\ &= \text{Area of the imaginary trapezoid}\\ &= \frac{1}{2} \times 2\; \rm s \times \left(10\; \rm m \cdot s^{-1} + 50\; \rm m \cdot s^{-1}\right)\\ &= 60\; \rm m\end{aligned}[/tex].

Explanation:

As the principle, a mixture gas of the fuel and the air is compressed in the cylinder at first and the gas exploded by use of an ignition plug and generate the output power

Explanation:

Engine of vehicles are manufacturers on the principle of internal combustion engine