How do you solving kinematic equations for horizontal projectiles?

Answer:

The correct option is A

Explanation:

Firstly, it should be noted that the freezing point of a substance can be assumed to be melting point of that substance because a substance will normally change from liquid to solid (freezes) at the same point it changes from solid to liquid (melts). For example, water freezes at 0°C and also starts melting at 0°C.

Thus, the substance with the lowest melting point among the substances mentioned in the question is alcohol (ethanol) with the melting point of -114°C. Hence, ethanol also has the lowest freezing point thereby freezing at the lowest temperature.

Answer:

0.5m/s2

..............

Answer:

??????

Explanation:

Answer:

Magnets are only attracted to special metals. Iron, cobalt and nickel are magnetic. Metals that have iron in them attract magnets well.

Explanation:

from Google

Answer:

Magnets can only attract some metals. These special metals are called ferromagnetic. Magnets are usually made of iron, cobalt, and nickel, which are also the ferromagnetic metals.

Explanation:

Answer:

answer is 2 option because more force is applied

Answer:

In addition to depleting resources for forest-dependent communities, deforestation is contributing to an increase in small-scale natural disasters.“That means when there's heavy rainfall, forest soil can absorb water underground and disburse it to streams.

Answer:   Deforestation invites natural disasters by the following reasons:-

i) Soil erosion

ii)Landslides due to soil erosion

iii) Forest fire

iv) Flooding due to soil erosion

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Answer:

280N

Explanation:

f = mass x acceleration

Answer: velocity

Explanation: v/t

Explanation:

s = ut + 1/2 a t^2

200 = 0 * 6 + 1/2 * a * (6)^2

200 = 1/2 * a * 36

200 = 18 a

a = 200/18

a= 11.1m/sec^2

v = u + at

v = 0 + 11.1 * 6

v = 66.6m/s

hope it helps you

The others are:

Ampere

Mol

Candela

Answer:

hope it is helpful to you

Answer:

Pressure, temperature and humidity all affect air density. And you can think of air density as the mass of air molecules in a given volume.

Explanation:

Answer:

Power = 450 Joules / 50 seconds = 9 J/s = 9 W *average* power

Explanation:

Power = Energy / Time ( or Work / Time) just as Velocity = Distance / Time

So, the average power needed for 50 seconds to do 450 Joules of work is simply 450 J / 50 s = 9 J/s = 9 Watts  (The unit Watt is defined so that 1 Watt = 1 Joule / Second).  It's important to note that 9W is the *average* power. The problem does not say that Tyler does work at a constant rate, so it's worth adding that caveat to the answer!

Answer:

0.014 kg

Explanation:

trust me its right i took the assessment and got 100%.  :)

Answer:

B because thats the answer

Answer:

Well, actually yes.

Explanation:

As the ball is going up its kinetic energy is getting transformed into potential energy. At the point, where entire kinetic energy (some part will be lost in overcoming air resistance) is transformed to potential energy ,it will stop going up, And from that point it will fall down.

Answer:

The resistance of the lamp is 4Ω.

Explanation:

You have to apply voltage formula :

V = I × R

R = V ÷ I

R = 240 ÷ 60

R = 4 Ω

Answer:

D. The total amount of energy at the bottom is equal to the amount at the top, but he gained some energy as he traveled due to a higher speed.

Explanation:

The total amount of energy at the bottom is equal to the amount at the top, but some energy was converted into other forms due to friction.

Therefore the correct answer is option B.

The sum of all the energy in motion (total kinetic energy) and all the energy that is stored in the system (total potential energy) is known as mechanical energy.

The expression for total mechanical energy can be given as follows

ME= PE + KE

As given in the problem Jacob is riding his bike down a tall hill. At the top of the hill, he has 2800J of potential energy. At the bottom of the hill, when he is going the fastest, his kinetic energy measures 2650J.

However, some energy was changed into other forms owing to friction, so the total quantity of energy at the bottom is equal to the whole amount at the top.

Thus, option B is the appropriate response,

To learn more about mechanical energy from here, refer to the link;

brainly.com/question/12319302

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it is true. the trajectory reaches the value of zero at the top

Answer:

2 m/s/s

Explanation:

a= (vf-vi)/t

a = (26-22) / 2

a = 2 m/s/s

Answer:

Civil engineers design major transportation projects. Civil engineers conceive, design, build, supervise, operate, construct and maintain infrastructure projects and systems in the public and private sector, including roads, buildings, airports, tunnels, dams, bridges, and systems for water supply and sewage treatment.

Answer:

...........................

Answer:

D. At a depth equal to 1/3 radius of the earth

Answer:

The 5kg iron.

Explanation:

It would be 5Kg iron because it is heavier. Heavier objects fall faster.

When you drop a 2 kg iron weight and a 5 kg iron weight from a height, both will hit the ground at the same time.

"It is the measure of the force of gravity acting on a body. "The formula for weight it is given by: w = mg. As weight is a force its SI unit is also the same as that of force, SI unit of weight is Newton (N).

"State of a body that moves freely in any manner in the presence of gravity. The planets, for example, are in free-fall in the gravitational field of the Sun. Newton's laws show that a body in free-fall follows an orbit such that the sum of the gravitational and inertial forces equals zero."

Know more about free fall of body here

https://brainly.com/question/13299152

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Answer:

mag aral ka bubu

Explanation:

ang tanga mu hahahahhaha luko nandyan lang naman yan hahahhahahahahahahhahahahahahahahhahahahahahaahahahahahahahhahahahahahahahahahahahahaahhahahaahahhaahha09561782

Answer:

for question no.4,

time =6 secs

acceleration due to gravity (g)= 9.8 m/s^2

velocity=gt

=6×9.8

=58.8m ans...

for question no .5,

time taken = 4seconds

aacceleration due to gravity (g)=9.8 m/s^2

distance=12gt

=12×9.8×4

=470.4meter answer...

Answer: I think it would be a spring

Explanation: a rug, a slide, and a race track would all have friction and friction is not a conservative force which wouldn’t qualify for mechanical energy.

That’s my guess I’m not very good at this stuff though

Answer:

If the average kinetic energy is greater than the attractive forces between the particles, a substance will not condense to form a liquid or a solid. If the kinetic energy is less than the attractive forces, a liquid or solid will form.

Explanation:

Answer:

6500g

Explanation:

7000 - 500 = 6500

The mass of paint will be "6500 g".

Given:

Total mass,

Volume,

Mass of empty tin,

Now,

The mass of paint will be:

= Total mass - Mass of empty tin

By putting the values, we get

= [tex]7000-500[/tex]

= [tex]6500 \ g[/tex]

Thus the approach above is correct.

Learn more:

https://brainly.com/question/25002441

Answer:

42km/h

Explanation:

Change in km/ Change in time

1.4 x 100

0.033 x100

140km/3.3

= 42.4242 --> 42km/h

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