Please help, I have no idea what the answer to this is and I did not learn it in class ;-;

Answer:

200 Volts

Explanation:

V= IR

V = 20 Ohm * 10 A = 200Volt

Potential difference V is 200 volt

Resistance R = 20 ohms

Current I = 10 Amp.

Potential difference V

Potential difference V = IR

Potential difference V = 20(10)

Potential difference V = 200 volt

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Answer:  I think it is C

Explanation: sorry if it wrong

Answer:

C

Explanation:

got it right on edge

Answer:

When a force acts on an object that is stationary or not moving, the force will cause the object to move, provided there are no other forces preventing that movement. If you throw a ball, you are pushing on it to start its movement. If you drop an object, the force of gravity causes it to move.

hope this helps :)

Answer:

It states that a graph is perfect if the sizes of the largest clique, and the largest independent set, when multiplied together, equal or exceed the number of vertices of the graph, and the same is true for any induced subgraph

KE = 0.5 x mv^2

Kinetic energy equals 1/2 times mass times velocity squared.

Mass = 15kg

Velocity = 3m/s

Plug it into the formula.

KE = 0.5 x 15(3^2)

KE = 0.5 x 15(9)

Multiply the mass and velocity squared.

KE = 0.5 x 135

Then, multiply the result by 1/2 or 0.5

KE = 67.5

The kinetic energy of a bicycle that has a mass of 15kg and travels at 3m/s is 67.5J.

Answer:

67.5 J

Explanation:

Kinetic energy can be found using the following formula.

[tex]KE=\frac{1}{2}mv^2[/tex]

where m is the mass in kilograms and v is the velocity in m/s.

We know the bike has a mass of 15 kilograms. We also know the velocity is 3 m/s. Therefore, we can substitute 15 for m and 3 for v

[tex]KE=\frac{1}{2}*15*3^2[/tex]

Evaluate the exponent first. 3^2 is the same as 3*3, which is equal to 9.

[tex]KE=\frac{1}{2} *15*9[/tex]

Multiply 15 and 9.

[tex]KE=\frac{1}{2} *135[/tex]

Multiply 1/2 and 135

[tex]KE=67.5[/tex]

Add appropriate units. Kinetic energy uses Joules or J as the units.

[tex]KE= 67.5 Joules[/tex]

The kinetic energy of the bike is 67.5 Joules

Answer: time t = 2 seconds

Explanation:

Given that

Power P = 50W

Energy E = 100J

How long did it take to move the box from the floor to the shelf ? This implies time taken.

Power is defined as the rate at which work is done. I.e

P = W.D/t

Where work done = energy

50 = 100/t

Make t the subject of formula

t = 100/50

t = 2 second

Answer: A

Potential energy = 14.7 J

Explanation:

Given that the

Mass M = 5 kg

Height h = 0.3 m

Let us take acceleration due to gravity g = 9.81 m/s^2

Potential energy = mgh

Substitute all the parameters into the formula above

P.E = 5 × 9.81 × 0.3

P.E = 14.715 J

P.E = 14.7 J approximately

The correct option is therefore A

Answer:

Roman Numerals?

Explanation:

Iron(II), would be iron 2+

iron(III), would be iron 3+

for example.

Answer:

D) 1000 m/s

Explanation:

[tex]wavelength = \frac{velocity}{frequency}[/tex]

You have the wavelength and frequency, you just need to solve for velocity. You can do this by multiplying each side of the equation by frequency.

Hope this helps.

Answer:

a cellphone

Explanation:

pls mark brainliest

Answer:

A car

Explanation:

Answer:

(A.) H2 --> 2H+ 2 e- (oxidation)

Explanation:

A. oxidation is the removal of electron(s) from a substance. This is the case here, since AFTER the reaction you can see that there were electons "removed" from H2.

H2 --> 2H+ 2 e- (oxidation)

B. reduction is the addition of electron(s) to a substance

1/2 O2 + 2 e- + 2H+ --> H2O (reduction)

By the way:

Biochemical reactions often involve the transfer of complete hydrogen atoms, meaning an electron and a proton.

The substance oxidized (H2) is electron donor.

The substance reduced (O2) is electron acceptor.

Just remember this:

Prior to the reaction, the e donor is always reduced.

Prior to the reaction, the e acceptor is always oxidized.

Answer:

Force, [tex]F=2.88\times 10^{-3}\ N[/tex]

Explanation:

Charge 1, [tex]q_1=1\times 10^{-7}\ C[/tex]

Charge 2, [tex]q_2=-2\times 10^{-7}\ C[/tex]

Distance between charges, d = 0.25 m

It is required to find the force between charges. The charges are opposite the force between them is attractive. The force between charges is given by :

[tex]F=\dfrac{kq_1q_2}{d^2}\\\\F=\dfrac{9\times 10^9\times 1\times 10^{-7}\times 2\times 10^{-7}}{(0.25)^2}\\\\F=2.88\times 10^{-3}\ N[/tex]

So, the force between charges is [tex]2.88\times 10^{-3}\ N[/tex].

Answer:

6 V

Explanation:

By ohm's law :

V = IR

V = 0.2 × 30 = 6 V

Answer:

V=6V

Explanation:

Use the equation I=V/R and solve for V then use V=IR plug in the numbers.

V=IR

V=30(0.2)

V=6V

provide the reactants needed to start cellular respiration

Explanation:

The thing you should know is that photosynthesis is exactly opposite from cellular respiration.

the products of photosynthesis are the oxygen and the organics.

And the oxygen and the organics are also the reactants of the cellular respiration.

Answer:Water

Explanation:

Read more from the chapter

Answer:

Option B

Explanation:

One centimeter is equal to10 mm. The reading on the scale lies with in the mark of 12 and its adjacent division.  

This length between two sub units is equal to 1 mm. Since the scale shows falls somewhere between 1 mm unit of length, it can be taken as half of it i.e 0.05 mm.  

Hence the total length would be 12.05 mm

Option B is correct

12.05 mm

I hope this helps you

Answer:

B

Explanation: yes

Answer:

D

Explanation:

selective breeding programs

Answer:

vfx local KFC kid lsd Ltd Ltd KFC

Explanation:

We have,

Force acting on the mass is 310 N

Mass, m = 120 kg

Distance covered by the mass is 30 m

Time, t = 3 s

To find,

(a) Work done (b) power developed

Solution,

(a) The work done on the mass is given by the product of force and displacement such that,

[tex]W=Fd\\\\W=310\times 30\\\\W=9300\ J[/tex]

(b) The rate at which the work is done is called power developed. Its formula is given by :

[tex]P=\dfrac{W}{t}\\\\P=\dfrac{9300}{3}\\\\P=3100\ W[/tex]

Therefore, the work done on the mass is 9300 J and the power developed is 3100 W.

Answer:

Red line is reflected ray.

Explanation:

According to the given figure, the blue line represent the incident ray. It strikes the surface and reflection occurs. The dotted line shows normal.

After reflecting the surface, the ray of light is reflected. Red line shows the reflected light.

In this case, the laws of reflection follows i.e. the angle of incidence is equal to the angle of reflection.

Answer:

B.C. D. G.

Explanation:

A vector quantity, has both magnitude and direction. A tip to remember is if you can add a direction to it! You wouldnt say 30 pounds north, but you would say 30 mph north.

I hope this helped! Comment if you have any questions! :)

Answer:

Hope this helped :

Explanation:

When light passes from a medium with one index of refraction (m1) to another medium with a lower index of refraction (m2), it bends or refracts away from an imaginary line perpendicular to the surface (normal line). As the angle of the beam through m1 becomes greater with respect to the normal line, the refracted light through m2 bends further away from the line.

At one particular angle (critical angle), the refracted light will not go into m2, but instead will travel along the surface between the two media (sine [critical angle] = n2/n1 where n1 and n2 are the indices of refraction [n1 is greater than n2]). If the beam through m1 is greater than the critical angle, then the refracted beam will be reflected entirely back into m1 (total internal reflection), even though m2 may be transparent!

Answer:

G

Explanation

The acceleration of gravity is constant, and = 9.8 m/s² , no matter what mass of the object is. Initial speed for both objects = 0 m/s. So, after 2 sec the objects will have the same speed and the same distance.

Answer G: speed=v, distance =d.

Answer:

Reaction

Explanation:

Answer:Muscles pull on the joints, allowing us to move. They also help the body do such things as chewing food and then moving it through the digestive system. Even when we sit perfectly still, muscles throughout the body are constantly moving.

Muscles move body parts by contracting and then relaxing. Muscles can pull bones, but they can't push them back to the original position. So they work in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint.

Explanation:

Answer:

1.Work done=100 joules

2.potential energy

3.kinetic energy

Explanation:

W=Force x distance

w= 20 N x 5 M

W = 100 JOULES