Are these right? Just need you to confirm or tell we what I got wrong. Thanks​

Answer:

joule

Explanation:

hop it helps give a good rate ples

Answer:

joule

Explanation:

Answer:

0.70+2.4=23.7+35.0=answer

Explanation:

Answer:

First Question:

If the initial velocity is horizontal: It doesn't really matter how fast it is going horizontally if we want to calculate time.

Since it rolled off the table, the initial vertical velocity is 0. The displacement will be -0.7 meters since the table is 0.7 meters high. The acceleration will be -9.8 m/s^2 because that's just earth's gravity.

We can plug the variables into the formula Displacement = Initial Velocity*Time + 1/2*Acceleration*Time^2:

[tex]-0.7 = 0\cdot t + 1/2\cdot-9.8\cdot t^2\\-0.7 = -4.9*t^2\\t^2 = \frac{10}{7} \\t = \sqrt{\frac{10}{7}}[/tex]

Rounded to the nearest hundredths, the answer is 1.2 seconds.

Second Question:

We can use the horizontal variables to find out the time to solve for the vertical velocity.

The acceleration is going to be 0(assuming no air resistance), the initial velocity is going to be 23.7 m/s, and the displacement is going to be 35.0 meters.

Again, we can plug the variables into the formula Displacement = Initial Velocity*Time + 1/2*Acceleration*Time^2:

[tex]35 = 23.7\cdot t + 1/2\cdot 0\cdot t^2\\35 = 23.7\cdot t\\t = \frac{35}{23.7}[/tex]

Rounded to the nearest hundredth, t = 1.48.

Now, we're going to find the vertical variables:

The acceleration will be -9.8 m/s^2 because that's just earth's gravity. The initial velocity will be 0 because the rock was launched horizontally. The time, as calculated before, is 1.48.

Now, we can plug t into the formula Velocity = Initial Velocity + Acceleration *Time:

[tex]v = 0 + -9.8\cdot1.48\\v = -14.504[/tex]

Rounded to the nearest hundredth, the answer is -14.5 meters per second.

Third Question:

Let's find the horizontal variables:

Assuming no air resistance, the final velocity is 205 m/s. The initial velocity will also be 205 m/s. The time will be 6.5 seconds.

We can use the formula Displacement = (Final Velocity+Initial Velocity)/2 * Time. In this case, the final velocity and the initial velocity are the same, so the formula reduces to Displacement = Final Velocity * Time:

[tex]d = 205\cdot6.5\\d = 1332.5[/tex]

Therefore, the answer is 1332 meters.

I really hoped this helped you because I spent more than 1 hour explaining. If you have more questions don't hesitate to ask. If it helped you, please consider giving me brainliest? :)

Answer:

6.6 Meters = 660 Meters

Explanation:

1 Meter = 100 Centimeters

Answer:

D=m/v

Explanation:

1.37kg/1.3899m cube

0.9927kg meter cube

Answer

nbbbbbbbbbbbbbbbbbbbsn

Answer:

a ecology

Explanation
L nathaliedog

Answer:

Music has an important place in our lives.

Answer:

The ball continued moving in the same direction and its speed increased.

When John kicked the ball, this was an example of motion. The ball's force increased because the ball got force from John's leg. So, the answer is option A.

Hope this helps you!

Answer: v = 43.98 m/s

Explanation: 22 + 15.7x1.4 = 43.98.

Hope this helps!

Answer:52.5

Explanation:

You pull a sled with a package on it across a snow-covered flat lawn. If you apply a force of 65.1 N to the sled, it accelerates at 1.24 m/s2. The combined mass of the package and the sled m = 52.50 kg

The given data to find Mass,

The force applied to the sled, F = 65.1 N

Acceleration of the sled, a = 1.24 m/s²

Forces are defined by both strength and direction.

Force is a vector quantity. It is a quantity that is described by Magnitude and Direction. The strength of a force is its magnitude and the direction, well it is the direction the magnitude is applied on the object.

We need to find the combined mass of the package and the sled. Let it is m. Using definition of force as follows :

F = ma

m = F/a

m = 65.1 /1.24

Mass, m = 52.5 Kg.

If you apply a force of 65.1 N to the sled, it accelerates at 1.24 m/s2. The combined mass of the package and the sled m = 52.50 kg

Hence, Option C is the correct answer.

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Answer:

what

Explanation:

Answer:

Element is the answer ok

Explanation:

Okayyy.. So..

12 pounds = 26.00

1 pound=2.17

Now you have to use cross multiplication method

[tex]1 = 2.17 \\ = 18.00[/tex]

The answer is 8.3

If I'm not mistaken

Answer:

Rarefaction (I think so..)

The part of a longitudinal wave where the particles are spread apart is called a  rarefactions.

Longitudinal waves are waves in which the displacement of the medium is in the same (or the opposite) direction as the wave propagation and the medium vibration is parallel ("along") to the direction the wave travels.

Because they create compression and rarefaction when passing through a material, mechanical longitudinal waves are also known as compressional or compression waves. They are also known as pressure waves because they cause pressure changes.

The  part of a longitudinal wave where the particles are spread apart is called a rarefactions and the  part of a longitudinal wave where the particles are closed together is called a compression.

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Answer:

c) the quantity that opposes inertia

Answer:

hi !

Pressure = Force/Area

Force = Pressure*Area

Pressure = 25 Pa

Area = 100 cm² = 0.01 m²

F = 25*0.01

   = 0.25 N

Explanation:

It will need a force acceleration

Answer:

rusting is a chemical property because it is irreversible it changes the identity of a substance

Answer:

C. chemical property

Explanation:

a chemical property of iron is that it is capable of combining with oxygen to form iron oxide，the chemical name of rust

Answer:

A i think tell me if i got it right

Explanation:

Based on the location on the periodic table, Potassium (K) is the metal that will be less reactive than rubidium and more reactive than calcium.

The reason behind circular motion at constant speed is not a natural state of motion is centripetal acceleration acting on it.

Centripetal acceleration is a characteristic of an object's motion along a circular path. Centripetal acceleration applies to any item travelling in a circle with an acceleration vector pointing in the direction of the circle's center.

A natural state of motion is that motion where object moves with constant velocity and no acceleration. As  in circular motion of  an object at constant speed, a constant centripetal acceleration remains, this is not a natural state of motion.

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Answer:

His average speed is through 4-6.

Explanation:

Because if you divide them both by 5 you get 4 and 6.

Answer:

I would say the first one.

A: They can heat and cool an indoor space.

Explanation:

Reversible heat pumps are capable of providing both heating and cooling processes using the same two environments. When heating, they use the external pipes to absorb heat and release that heat into the indoor environment. When cooling, they absorb the heat from indoors and release that heat into the outside environment.

Answer:

A

Explanation:

Answer:

Hysteresis, Eddy current, flux leakage and resistance of winding are those four reasons. It is impossible to overcome this four reasons, Hence transformer never be 100% efficient.

Answer:

The Doppler red-shift of light observed from distant stars and galaxies gives evidence that the universe is expanding (moving away from a central point). This allows for Big Bang Theory, because after a “bang” occurs all of the matter moves away from the point of origin.

Answer:

200/67.1224321241 = 2.97962981482 hours to travel 200 miles.

Hope this helps :)

Explanation:

First, convert the speed of the bus back to km/h so it makes things easier. The bus is going at an unreasonably high seed of 108 km/h and will usually result in a crash caused by the driver being unable to control the bus at such high speeds, even it won’t topple over at an inclination of 28 degrees for double decker buses (when the bus is stationary. If the prototypes can’t meet this requirement, the prototype fails the safety test and won’t be used as a bus for carrying passengers).

If you ignore that problem, we will start to do the calculation. 108 km/h is equal to 67.1224321241 mph, so it would take 200/67.1224321241 = 2.97962981482 hours to travel 200 miles.

2.97962981482 hours is equal to 2 hours, 58 minutes, 46 seconds, 667 milliseconds, 333 microseconds and 352 nanoseconds.

Here is the list of descending order of time magnitude of smaller than one second for extra information.

Decisecond = 0.1 second (one tenth)

Centisecond = 0.01 second (one hundredth)

Millisecond = 0.001 second (one thousandth)

Microsecond = 0.000001 second (one millionth)

Nanosecond = 0.000000001 second (one billionth)

Picosecond = 0.000000000001 second (one trillionth)

Femtosecond = 0.000000000000001 second (one quadrillionth)

Attosecond = 0.000000000000000001 second (one quintillionth)

Zeptosecond = 0.000000000000000000001 second (one sextillionth)

Yoctosecond = 0.000000000000000000000001 second (one septillionth)

Planck time = 0.00000000000000000000000000000000000000000001 second

Planck time is the smallest measurable time interval in theory.