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cluponka [151]
3 years ago
7

A hurricane is a huge storm that forms over warm ocean waters. Many hurricanes enter the Gulf of Mexico and move in a northweste

rly direction. A hurricane travels a distance of 20 miles in 1 hour. Determine the hurricane's speed. (SPEED = DISTANCE / TIME)
Physics
1 answer:
labwork [276]3 years ago
5 0

Answer:

536.448m/s or 20miles/hr

Explanation:

Speed is defined as the distance travelled by a body or an object in a specified time.

Speed = Distance/Time

If a hurricane travels a distance of 20 miles in 1 hour.

Distance travelled = 20miles

Time taken = 1hour

Speed = 20miles/1hour

Speed = 20miles/hr

Since 1mile = 1609.344m

20miles = 20×1609.344

20miles = 32186.88m

1hour = 60seconds

Expressing the speed in m/s

Speed = 32186.88m/60s

Speed = 536.448m/s

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Vocabulary word for the total amount of charge in a closed system remains constant
Usimov [2.4K]

Answer:

i think this is it i dont know tho A conservation law stating that the total electric charge of a closed system remains constant over time, regardless of other possible changes within the system. "Conservation of charge." YourDictionary. LoveToKnow

7 0
3 years ago
Consider two sizes of disk, both of mass M. One size of disk has radius R; the other has radius 4R. System A consists of two of
Harman [31]

Answer:

4 smaller disks

Explanation:

We are given;

Mass of smaller and larger disks = M

Radius of smaller disk = R

Radius of larger disk = 4R

Formula for moment of inertia about cylinder axis is:

I = ½MR²

Thus;

For small disk, I_small = ½MR²

For large disk, I_large = ½M(2R)² = 2MR²

We are told that moment of inertia of System A consists of two of the larger disks. Thus;

I_A = 2 × I_large = 2 × 2MR²

I_A = 4MR²

We are also told that System B consists of one of the larger disks and a number of the smaller disks. Thus;

I_B = I_large + n(I_small)

Where n is the number of smaller disks.

I_B = 2MR² + n(½MR²)

I_B = MR²(2 + n/2)

We are told that the moment of inertia for system A equals the moment of inertia for system B. Thus;

I_A = I_B

So;

4MR² = MR²(2 + n/2)

MR² will cancel out to give;

4 = 2 + n/2

Multiply through by 2 to give;

8 = 4 + n

n = 8 - 4

n = 4

5 0
3 years ago
What is the kinetic energy of a vehicle that has a mass of 3,500 kg and is moving at 40 m/s
stiv31 [10]

Answer:2800000j

Explanation:

For us to know the kinetic energy of the vehicle,

Where m is the mass

And v is the velocity

Then, K.E=1/2mv^2

While, K.E=1/2×3500×40^2

Therefore, our answer will now be

K.E=2800000j

5 0
3 years ago
A slab of a thermal insulator is 100 cm2 in cross section and 2 cm thick. Its thermal conductivity is 0.1 J/s.m.ºC. If the tempe
bekas [8.4K]

-5 W is the heat flows through the slab in one day

Explanation:

  • The heat transferred is directly proportional to the area of the material and the temperature differences in the body, whereas the heat transfer is inversely proportional to the length of the material
  • The equation can be written as  Q=-k \frac{ A T}{l} where Q is the heat transfer, k is the thermal conductivity of the material, A is the area of the material and T is the difference in the temperature and the l is  the length of the material.
  • Given that, A= 100 cm^{2} , l= 2 cm, k = 0.1 J/S. m. c and T= 100 degree Celsius
  • Substitute these values in the equation, you will get Q= -5 W
5 0
3 years ago
What is the relationship between Force, area and mass​
natta225 [31]

Answer:

F=ma

Explanation:

Force is equal to mass multiplied by area

Force= mass × area

In turn the formula can be twisted so

Force/mass= area

Force/area= mass

3 0
3 years ago
Read 2 more answers
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