ASAP help please please ill give brainlist i swear

Answer:

If this helps, to work out the kinetic energy the formula is K (stands for kinetic energy) = 1/2 (half of) mass and velocity. So the answer is 450 joules.

Explanation:

Answer:

Option B

Explanation:

This involves the conservation of momentum:

m1v1 = m2v2

Now initially neither the rock nor Bob is moving. Then the rock moves forward with a velocity of 5 m/s, having a mass of 20 kg. But Bob moves back by the conservation of momentum, so at what velocity?

0 = 20(5) + 100(vf),

-100 = 100vf,

vf = - 1m/s

Answer:

The possibility of Adenine=40% and Thymine=60% is only in single stranded DNA molecule. In the question, the DNA sample referred is a single stranded DNA. If guanine=10% as guanine will always pair with cytosine, i.e.cytosine is also 10% then adenine and thymine accounts 80% as adenine will always pair with thymine.

A molecule of DNA cannot contain 60% thymine because this amount will surpass 100% in consideration of its complementary base.

DNA or deoxyribonucleic acid is a biological molecule that stores genetic information in living cells.

DNA is a double stranded molecule that consists of nucleotide bases as follows:

According to Chargaff in his rule, the amount of adenine & thymine and guanine & cytosine in a DNA molecule is the same, which must equal 100% overall.

Therefore, if thymine is 60% in the DNA, adenine will also be 60%, which in total has already surpassed 100% without adding the other two bases.

Learn more about DNA at: https://brainly.com/question/1822938

Answer:

1:No

2:The teacher was in the hall  so how would the child ask?

3: The child could have went into the hallway and asked the teacher if they could try and fix it.

Explanation:

Sorry if that isn't what your asking!

      </3 PureBeauty

Answer:

During lunch your friend asked you to come over after school, so you get on their bus to go home.

Questions to answer:

1. Was consent given (yes, no, unsure)?

2. What evidence do you have to prove your way of thinking?

3. How can you change the scenario to show that consent was given?

Explanation:1:No2:The teacher was in the hall so how would the child ask?3: The child could have gone into the hallway and asked the teacher if they could try and fix it.

Answer:

400 m

Explanation:

20m/s x 20s = 400m

Answer:

gggn×2

lol

Explanation:

hujhyhhhgyhngfg

ojui

ukk

lol

Answer: Chemical Energy

Explanation:

Glucose and other food molecules are broken down by controlled stepwise oxidation to provide chemical energy in the form of ATP and NADH.

Answer:

they are the same

Explanation:

change in speed is 10km/h for both, and the time is the same for both. they have the same acceleration.

Answer:

The force of her push overcomes the forces of gravity

Explanation:

The force of her push overcomes the forces of gravity and friction. The correct option is A.

Friction is basically the force that restricts solid surfaces, fluid layers, and material elements from sliding against each other.

There are various kinds of friction: Dry friction is the force that opposes the relative lateral motion of two in contact solid surfaces.

Friction is defined as the force that opposes the movement of one solid object over another. Friction is classified into four types: static friction, sliding friction, rolling friction, and fluid friction.

Gravity causes objects to accelerate as they fall to the ground. Acceleration is a change in velocity, which is a measurement of the speed and direction of motion.

Katrina pushes her new skateboard off a flat sidewalk. Her push overcomes the forces of gravity and friction.

Thus, the correct option is A.

For more details regarding friction, visit:

https://brainly.com/question/13000653

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Answer:

The answer would be D

Explanation:

It's quite simple, the Universal Law of Gravitation states that all mass no matter the size, shape, or weight acts equally upon the force of gravity of the gravitational object. Basically, between all sizes, shapes, weights of masses, gravity applies the same gravitational force with all. Gravity with friction would be something else, which is also states in the Theory of Gravitation.

Answer:

D) The temperature of the reactants is greater than the temperature of the products.

Explanation:

All the answers:

1. A) The reactants are unlit charcoal, and the products are charcoal that has already burned and released its energy

2. C) sugar + oxygen → carbon dioxide + water + energy

3. D)  iron + oxygen → rusted iron + energy

4. A) an endothermic reaction, because ice absorbs heat to become liquid water

5. D) The temperature of the reactants is greater than the temperature of the products.

We can argue that a reaction is endothermic when the temperature of the reactants is greater than the temperature of the products.

An endothermic reaction is a chemical reaction accompanied by the absorption of heat.

Comparing the reactants and the products of a chemical reaction, which observation can best be used to argue that the reaction is endothermic?

We can argue that a reaction is endothermic when the temperature of the reactants is greater than the temperature of the products.

Learn more about endothermic reactions here: https://brainly.com/question/1995950

Answer:

Talk to his team captain and ask him to alert the referee to keep a better eye on the player.

Answer:

C - talk to coach and ask to alert the ref

Explanation:

I took the test

Answer:

it limits the amount of electrical energy that can pass through a circuit

Answer:

0.25 m

Explanation:

Refraction occurs when the velocity or wavelength of a wave changes at the interface between two media.

We know that refractive index=

Wavelength in medium A/wavelength in medium B = velocity in medium A/velocity in medium B

Let the wavelength of medium B be a

0.5/a = 0.3/0.15

0.5 × 0.15 = 0.3 × a

a= 0.5 × 0.15/0.3

a= 0.25 m

Answer:

Magnitude = 50 units

Direction = 53.13°

Explanation:

The formula to find out the magnitude of a resultant vector with the help of its x and y components is given as follows:

[tex]Magnitude = \sqrt{x^{2} + y^{2}}\\\\[/tex]

where,

x = 30 units

y = 40 units

Therefore,

[tex]Magnitude = \sqrt{(30 unit)^{2} + (40\ unit)^{2}}\\\\[/tex]

Magnitude = 50 units

Now, the direction of the resultant vector will be given by the following formula:

[tex]Direction = tan^{-1}\frac{y}{x}\\\\Direction = tan^{-1}\frac{40}{30}[/tex]

Direction = 53.13°

Answer:

Explanation:

A plane mirror will produce a virtual image of a real object. But it is correct that a plane mirror will also produce a real image of a virtual object.A virtual image An image in a mirror is a virtual object, which can in turn be used to create another image. This can occur when you have more than one optical element in the optical system. Then the object of one component becomes the image of the next optical component.

So the answer is Yes it will!!!!

Answer:

I think u know the answer of this question

Answer:

The car took 3 hours to travel 180 miles

Explanation:

Constant Speed Motion

An object travels at constant speed if the ratio of the distance traveled by the time taken is constant.

Expressed in a simple equation, we have:

[tex]\displaystyle v=\frac{d}{t}[/tex]

Where  

v = Speed of the object

d = Distance traveled

t = Time taken to travel d.

From the equation above, we can solve for t:

[tex]\displaystyle t=\frac{d}{v}[/tex]

The car travels at v=60 mi/h for a distance of d=180 miles. The time taken is:

[tex]\displaystyle t=\frac{180\ mi}{60\ mi/h}[/tex]

t = 3 hours

The car took 3 hours to travel 180 miles

Answer:

elastic potential energy

Answer:

elastic potential energy

Explanation:

mark me as brainlest

Answer:

The answer is C.) Atoms of the same element that have different numbers of neutrons.

Explanation:

I know this is right because i took the test!

Answer:

km

Explanation:

Answer:

Km

Explanation:

Speed is measured is distance traveled/time

Answer:

the  current in the wire is  0.008333333  A

Explanation:

The computation of the current in the wire is as follows;

Current in the wire is

= Total charge ÷ cross sectional area of the wire

= 7.5 × 10^-3C ÷ 0.9s

= 0.008333333  A

Hence, the  current in the wire is  0.008333333  A

We simply applied the above formula so that the correct current of the wire could come

And, the same is considerd and relevant too

Answer:

Explanation:

-The hypocenter is the point within the earth where an earthquake rupture starts. The epicenter is the point directly above it at the surface of the Earth. Also commonly termed the focus.

-The location below the earth's surface where the earthquake starts is called the hypocenter, and the location directly above it on the surface of the earth is called the epicenter. Sometimes an earthquake has foreshocks.

Answer:

Approximately [tex]8.4 \times 10^{2}\; \rm N[/tex], assuming that [tex]g = 9.8\; \rm m \cdot s^{-2}[/tex].

Explanation:

Let [tex]m[/tex] and [tex]a[/tex] denote the mass and acceleration of Spiderman, respectively.

There are two forces on Spiderman:

The directions of these two forces are exactly opposite of one another. Besides, because Spiderman is accelerating upwards, the magnitude of [tex]F(\text{tension})[/tex] (which points upwards) should be greater than that of [tex]W[/tex] (which points downwards towards the ground.)

Subtract the smaller force from the larger one to find the net force on Spiderman:

[tex](\text{Net Force}) = F(\text{tension}) - W[/tex].

On the other hand, apply Newton's Second Law of motion to find the value of the net force on Spiderman:

[tex](\text{Net Force}) = m \cdot a[/tex].

Combine these two equations to get:

[tex]m \cdot a = (\text{Net Force}) = F(\text{tension}) - W[/tex].

Therefore:

[tex]\begin{aligned}& F(\text{tension})\\ &= m \cdot a + W \\ &= m \cdot (a + g)\\ &= 76\; \rm kg \times \left(1.3\; \rm m \cdot s^{-2} + 9.8\; \rm m \cdot s^{-2}\right)\\ &\approx 8.4\times 10^{2}\; \rm N\end{aligned}[/tex].

By Newton's Third Law of motion, Spiderman would exert a force of the same size on the strand of web. Hence, the size of the force in the strand of the web should be approximately [tex]8.4\times 10^{2}\; \rm N[/tex] (downwards.)