What is the name for forces that act on an object and cancel each other out causing the object to be at rest?

Answer:

Explanation:

I got everything but i. Don't know why but it's eluding me. So let's do everything but that.

a. PE = mgh so

   PE = (2.5)(98)(14) and

   PE = 340 J

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

   [tex]KE=\frac{1}{2}(2.5)(14)^2[/tex] and

   KE = 250 J

c. TE = KE + PE so

   TE = 340 + 250 and

   TE = 590 J

d. PE at 8.7 m:

   PE = (2.5)(9.8)(8.7) and

   PE = 210 J

e. The KE at the same height:

   TE = KE + PE and

   590 = KE + 210 so

   KE = 380 J

f. The velocity at that height:

   [tex]380=\frac{1}{2}(2.5)v^2[/tex] and

   [tex]v=\sqrt{\frac{2(380)}{2.5} }[/tex] so

   v = 17 m/s

g. The velocity at a height of 11.6 m (these get a bit more involed as we move forward!). First we need to find the PE at that height and then use it in the TE equation to solve for KE, then use the value for KE in the KE equation to solve for velocity:

   590 = KE + PE and

   PE = (2.5)(9.8)(11.6) so

   PE = 280 then

   590 = KE + 280 so

   KE = 310 then

   [tex]310=\frac{1}{2}(2.5)v^2[/tex] and

   [tex]v=\sqrt{\frac{2(310)}{2.5} }[/tex] so

   v = 16 m/s

h. This one is a one-dimensional problem not using the TE. This one uses parabolic motion equations. We know that the initial velocity of this object was 0 since it started from the launcher. That allows us to find the time at which the object was at a velocity of 26 m/s. Let's do that first:

   [tex]v=v_0+at[/tex] and

   26 = 0 + 9.8t and

   26 = 9.8t so the time at 26 m/s is

   t = 2.7 seconds. Now we use that in the equation for displacement:

   Δx = [tex]v_0t+\frac{1}{2}at^2[/tex] and filling in the time the object was at 26 m/s:

   Δx = 0t + [tex]\frac{1}{2}(-9.8)2.7)^2[/tex] so

   Δx = 36 m

i. ??? In order to find the velocity at which the object hits the ground we would need to know the initial height so we could find the time it takes to hit the ground, and then from there, sub all that in to find final velocity. In my estimations, we have 2 unknowns and I can't seem to see my way around that connundrum.

Answer:

[tex]3 \times {10}^{8} m {s}^{ - 1} [/tex]

299 792 458 m / s

Answer:

faster than u

Explanation:

Answer:

Atoms of elements with the same electons in the outer most shell they are put in the same group on the periodic table

Answer:

often Positive and negative charges balance each other which gives an overall neutral charge. if they are unbalanced then it will result in static electricity.

Answer:

Explanation:

Simplest hydrocarbon (something made of carbon and hydrogen only) is Methane [tex]CH_{4}[/tex]

Answer:

d, both

Explanation:

fission is the process of electrons from atoms coliding into other atoms which releases more electrons and when done right releases lots of energy.

fusion is the process of using intense heat and electromagnetic forces to force electrons to bind to atoms which releases lots of energy

Answer:

A.

Explanation:

Biomass energy can be harvested from plants, wood, waste, and living or once living organisms.

~ LadyBrain

Answer:

okay sooo the weight is: 294 n

the normal force is 286 n

the acceleration is: -0.38 m/s²

Answer:

294 n

286 n

-0.38 m/s²

Explanation:

I think videos help more than books when it comes to martial arts. You can get it on YouTu.be if your teacher doesn't teach you online, in this pandemic.

Answer:  

The answer is A.) Dance studio.  

Explanation:  

See screenshot below  

Hope this helps! :D    

(Can you mark me brainliest?)

- ❤ 7272033Alt ❤

Answer:

V = I × R and the power law equation (formula): P = I × V. P = power

Answer:

The highest speed officially recorded for a bicycle ridden in a conventional upright position under fully faired conditions was 100 km/h (62 mph) by Alale (be mola) over 200 m.

Explanation:

Answer:

78 m

Explanation:

Initial v = 1 m/s

a = 4 m/s²

t = 6s

[tex]x = v_{i} t + \frac{1}{2}at^{2} \\x = (1)(6) + \frac{1}{2} (4)(6)^{2} \\x = 6 + 72\\x = 78[/tex]

Answer:

B.

Explanation:

Current is directly proportional to voltage and inversely proportional to the resistance.

The statement that is true is:

B. Current is directly proportional to voltage.

and

C. As resistance increases, current decreases.

If the velocity time graph is curved, it then means that the velocity is changing non uniformly​.

The velocity time graph is used to describe the changes in the velocity of a body with time. The slope of the graph is known as the acceleration of the motion.

If the velocity time graph is curved, it then means that the velocity is changing non uniformly​.

Learn more  about velocity time graph:https://brainly.com/question/11290682

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Answer:

it would look greenish blueish

Explanation:

Answer:

The first law of thermodynamics states that the change in the internal energy of a system equals the net heat transfer into the system minus the net work done by the system. This is another way of saying that energy can neither be created nor destroyed, but it can be converted from one form to another form.

A tea kettle that is warmed on an electric stove is receiving heat energy, this heat energy increases the kinetic energy of the water particles in the kettle and makes them to move faster. As time goes on, the water begins to turn into vapors. The heat energy that is released into the system is been used to carry out the work of evaporation and the whistling of the kettle.

Explanation:

If you copy and paste it will give you full credit :)

The power is produced by the machine to lift the object is 3430 Watts.

Power in physics is the quantity of energy that is transported or transformed per unit of time. The watt, or one joule per second, is the unit of power in the International System of Units. Power is also referred to as activity in ancient writings. A scalar quantity is power.

Given parameters:

Mass of the object = 35 kg.

Height: h = 20.0 s.

Time taken = 2.0 s.

work done by the machine = mgh = 35 ×9.8 × 20.0 joule = 6860 joule.

Hence, power of the machine = work done/time = 6860/2.0 Watts = 3430 Watts.

Learn more about power here:

https://brainly.com/question/29575208

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Answer:

For Parent #1 missing box it's t and for Parent #2 missing box is t

Answer:

maybeeeeeeeee launcherrr im not sureee hehe

Answer:

Explanation:

Average speed is found by adding together the total distances traveled by the athlete and divide that total by the total time it took.

Average velocity is vector, which means it includes direction. If the athlete heads one way and then turns around, his displacement might actually be negative! Yikes! Let's look at speed first:

[tex]s=\frac{600+1000}{2+1}=\frac{1600}{3}=533\frac{1}{3}\frac{m}{min}[/tex]

Velocity is the displacements added together divided by the total amount of time it took. The displacement is the same as the distance here, since the athlete did not veer off his straight-path and didn't turn around.

Average velocity = average speed = 533.3 m/min

Answer:

Monthly cost = 35.7

Explanation:

Given the following data;

Power = 7000 Watts

Time = 10 minutes

Number of days = 30 days

Conversion:

60 minutes = 1 hour

10 minutes = 10/60 = 0.17 hours

To find the monthly cost of electricity;

Energy = power * time

Energy consumption = 7000 * 0.17

Energy consumption = 1190 Watt-hour = 1.19 KWh (1 Kilowatts is equal to 1000 watts).

Next, to find cost of monthly energy consumption;

Cost = 1.19 * 30

Cost = 35.7

It would be C then B

C because vestigial means remnant of something that was once there

B because a pelvic bone is typically found in creatures that walk

Answer:

   I = 2.667 kg m²

Explanation:

The moment of inertia of a body can be calculated by the expression

         I = ∫ L² dm

For high symmetry bodies the expressions of the moment of inertia are tabulated, for a rod with its axis of rotation at its midpoint it is

         I = [tex]\frac{1}{12}[/tex] m L²

let's calculate

         I = [tex]\frac{1}{12}[/tex]  2  4²

         I = 2.667 kg m²

Answer:

Ohm's Law says

V=I⋅R.

A bit of algebra says

I=VR So V= 110V 25 Ω=4.4VΩ=A

I hope this helps,

Explanation: