In need of help!!!!!!

Answer:

1.#potential energy = PE, m = mass in kg, g = force of gravity, h= vertical height above the ground.  ** means to the power of ie exponent. * means multiply.

PE = mgh

300 = m(10)(15)

m = 300/(10)(15)

m= 2kg

2. KE = 1/2 mv**2

     = 1/2(50)(50)**2

     = 2500 joules

Explanation

Is as in solution

Answer:

C-D

Explanation:

As you can see from the graph, the distance from A to B was from 0 m to 6 m in a duration of 3 seconds.

Divide 6 meters by 3 seconds to find the speed:

6 ÷ 3 = 2 m/s

B-C is not moving due to a straight line as said in the graph, so speed is

0 m/s.

There is also C-D since the car traveled from a distance of 9 meters

(6 -(-3) = 9) in 3 seconds too. (NOTE: The graph line going down does not mean it is slowing down, but rather going to a certain distance like going backwards)

Divide 9 meters by 3 seconds to get the speed:

9 ÷ 3 = 3 m/s

Between A-B, B-C, and C-D, C-D has the fastest speed recorded with 3 m/s.

A-D does not count here as the line has no connection between point A and point D.

Cheers!

Answer:

Speed greater than 4 m/s

Explanation:

Given that Ms. Kasper is in a panic. Her cat, Penny, is stuck in a tree and about to jump out. In order to save her cat, Ms. Kasper needs to run to the tree, 12 meters away. If it takes her cat, 3 seconds to fall, how fast would Ms. Kasper have to run to save her cat?

The distance = 12 m

Time = 3s

Speed = distance/time

Speed = 12/3

Speed = 4 m/s

Ms Kasper must run at speed more than 4m/s for her to save the cat.

Answer:10cm3

Explanation:Volume Al = (27g Al)/(2.70g/cm3 Al) = 10cm3 Al. So, 27g of Al has a volume of 10cm3. *

Answer:

Explanation:

as we know that

density=mass/volume

given mass of Al=27 g  

density of Al=2.70g/cm^3

volume =mass/density

volume=27/2.70

volume=10 cm³

so 27 g of Al has volume of 10 cm³

Answer:

1. 1000000

2. 1000

3. 1000000

Explanation:

If there not right. I'm sorry.

Answer:

decreases 1/4 of the original value

If the distance between two charged particles is doubled, the force between them changes by a factor of 1/4.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Force between two charge particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

If the distance between two charged particles is doubled, the force between them changes by a factor of 1/4.

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Answer:exactly 28200 meters

Explanation:

Answer:

Yes because the hotter the water the less time it takes to dissolve.

Explanation:

Answer:

W = 222 N.

Explanation:

The qiestion says" If the acceleration of gravity on the surface of the planet Mercury is 3.7 m / s2, then what would be the weight of a person with mass 60 kg on its surface? "

Mass of the person, m = 60 kg

The acceleration due to gravity on the surface of gravity is 3.7 m/s²

We need to find the weight of a person on the surface of Mercury.

Weight of an object is given by :

W = mg

So,

W = 60 kg × 3.7 m/s²

W = 222 N

Hence, the person will weigh 2222 N on the surface of Moon.

I'm Pretty Sure The Answer Is - Difficulty Digesting Food Inability

Hopr This Help's

Answer:

Difficulty having children

Explanation:

Just took the test.

Answer:

18.15m

Explanation:

Speed * Time = Distance

5.5 * 3.3 = 18.15m

The distance traveled by Robin is equal to 18.15 m with an average speed of 5.5 m/s for 3.3s.

The average speed can be explained as the total distance covered by the object in a definite time. The average speed can be considered a scalar quantity as it exhibits magnitude and no direction.

The average speed of a physical system can be determined from the ratio of the total distance traveled by the system to the time taken to cover that distance.

The average speed equation of a physical system can be written as follows:

Average speed =  Total distance/total time taken

Given, the average speed of the Roin, = 5.5 m/s

The time is taken by Robin for jogging = 3.3 s

The average speed of the Robin can be determined as:

Average spped = Distance/ time

5.5 = Distance/3.3

Distance traveled by Robin = 5.5 × 3.3 = 18.15 m

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Explanation:

If a question says "at what point does the ball stop?", it means we need to find the position of the ball when its final velocity is equal to 0. It can be calculated using the equation of kinematics as follows :

d = ut + (1/2) at²

and

v²-u²=2ad

Where, u is initial velocity, v is final velocity, a is acceleration, t is time and d is displacement.

Answer:

Plan B, because the sample of cows is randomly chosen

Answer:

There are four rocky, or terrestrial, planets: Mercury, Venus, Earth, and Mars. These planets are called terrestrial planets because they are made up of rocks and metals and have solid surfaces.

Explanation:

Explanation:

The SI unit of power is the kilogram-meter2 per second cubed, which is called the watt (1 W = 1 kg-m2/s3). Since power is the energy used per unit of time, it is derived as the energy/time quotient.

Kelvin is a fundamental unit! It's a lot easier to measure temperature than to measure the motion of component particles. Hence, we can accept it as a fundamental quantity. Time is said to be a fundamental unit because it is not dependent on one or more units

Answer:

the magnitude of the dog's total displacement to the nearest tenths = 53.12°

Explanation:

Given that:

a dog walks 8.0m due to the north and 6.0 m due east.

We can determine the magnitude of the dog's total displacement by using the Pythagoras theorem.

Consider the north direction be the opposite and the east direction to be the adjacent, therefore the hypotenuse will be the dog's total displacement.

So, suppose hypotenuse is represented by a

the opposite represented by b, and the adjacent represented by c

Then;

a² = b² + c²

a² = 8²  +  6²

a² = 64 + 46

a² = 100

a =[tex]\sqrt{100[/tex]

a = 10.0 m

However, the magnitude of the dog's total displacement is calculated by taking the tangent of the system.

tan θ = opposite / adjacent

tan θ = b/c

tan θ = 8/6

tan θ = 4/3

tan θ = 1.333

θ = tan⁻¹ (1.333)

θ = 53.12

the magnitude of the dog's total displacement to the nearest tenths = 53.12°

Answer:

The noble gases are a group of chemical elements that make up Group 18 on the periodic table. These gases all have similar properties under standard conditions: they are all odorless, colorless, monatomic gases with very low chemical reactivity.

Answer:

16.77 m/s, 26.57° south of west

Explanation:

The two velocities form a right triangle.  Use Pythagorean theorem to find the magnitude of the resultant velocity.

v² = (-15 m/s)² + (-7.5 m/s)²

v = 16.77 m/s

Use trig to find the angle.

tan θ = ((-7.5 m/s) / (-15 m/s))

θ = 26.57° south of west

Answer:

They provide structure and support.

Explanation:

Answer:

the answer is 14,700

Explanation:

hope this helps :))

Answer:

14,700

Explanation:

were using the potential energy equation.

P.E- (150 kg) (9.8m/s2) (25 m) = 14,700

Answer:

D.visible light, infrared, microwaves

Explanation:

Answer:

visible light, infrared, microwaves

Explanation:

from highest to lowest

Answer: 1 2 5

Explanation:

Galileo Galilei, an Italian physicist, is credited with being the first to calculate speed by dividing it by the distance traveled and the time required. Galileo defined speed as the distance covered in a predetermined period of time. Thus option A, B. E is correct.

Speed is determined by dividing the distance by the time. Calculating the units for speed requires knowledge of the units for both time and distance. Since the distance is measured in meters (m) and the time is measured in seconds, the units in this example will be meters per second (m/s) (s).

That is speed = distance time. Alternatively, you can calculate the time by dividing the distance traveled by the speed. You can figure out the third input if you know two of the inputs.

Therefore,  For instance, if a car drives 120 miles (ca. 193 km) in 2 hours, we may calculate the speed as 120 × 2 = 60 miles per hour (ca. 97 km/h).

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Answer:

10 ohm

Explanation:

Since the resistors are arranged in series, their total resistance is their sum.

Hence, Total R = 2+3+5 = 10 ohm

Answer:

[tex] \fbox{ \sf { \: Solid \: , \: Liquid \: and \:Gas}}[/tex]

Explanation:

[tex] \star[/tex] Let's learn about matter.

We see different kinds of things around us. Some of these are wood , book , salt , beaker , sugar , water , milk , oil, rubber and water vapour. All these things occupy space and have mass as they are matter. Anything that occupies space and has weight is called matter.

[tex] \star[/tex] States of Matter

Solid , liquid and gas are the three states of matter.

[tex] \hookrightarrow{ \text{ \underline{ Solid}}}[/tex]

Different things have different sizes and shapes but a particular thing has a fixed shape and size. The things which have definite size and definite shape are solids. Stone , word , ice , glass etc are some examples of solid.

[tex] \hookrightarrow{ \text{ \underline{ Liquid}}}[/tex]

The things having a definite volume but no definite shape of their own are called liquids. Water ,milk , petroleum , oil etc are as common examples of liquid.

[tex] \hookrightarrow{ \underline{ \text{Gas}}}[/tex]

The things which have neither a definite volume not a definite shape of their own are called gases. The bases take the shape and the size of the vessels in which they are enclosed. Air , smoke , water vapours , hydrogen gas are some examples of gases.

[tex] \sf{Hope \: I \: helped !}[/tex]

[tex] \sf{Best \: regards !!}[/tex]

~[tex] \text{TheAnimeGirl}[/tex]

Answer:

690.8895705521 × 10^8 is the perfect answer of your question.

Answer:

430

Explanation:

converted it to cg then to mg

Explanation:

Number of nucleons

= no of protons + no of neutrons

= 8 + 8

= 16

Atomic number = no of protons = 8

Atomic mass = 15.999

Answer:

They killed 10 million people and registered it as a colony

Explanation:

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