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2 years ago

Mathematically, how does kinetic energy depend on mass? Someone PLZ HELP!

1 answer:

8 0

Answer: Hello sir, Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

Step-by-step explanation:

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8 Mineral Hardness Common object Diamond 10 Corundum 9 Topaz Quartz 7 Feldspar 6 Steel file (6.5) Apatite 5 Glass (5.5) Fluorite

adoni [48]

Answer:

feldspar, because it has a higher number then gypsum and apatite, and it can be scratched by quartz because it has a lower number.

5 0

2 years ago

8 1/2 x 2 3/4 x 2/3= 12

Aloiza [94]

Answer:

155.25= 12

Step-by-step explanation:

17/2*2*1/2 = 12

17*1/2 = 12

8 1/2 17/1* 1/2

8*2+1 17*1/1*2

2 17*1/1*2

16+1 17/1*2

2 17/2

17 8.5=12

7 0

3 years ago

How many different twotwo-letter passwords can be formed from the letters

Anna [14]

Answer:

$70$

Step-by-step explanation:

GIVEN: two two-letter passwords can be formed from the letters A, B, C, D, E, F, G and H.

TO FIND: How many different two two-letter passwords can be formed if no repetition of letters is allowed.

SOLUTION:

Total number of different letters $=8$

for two two-letter passwords $4$ different are required.

Number of ways of selecting $4$ different letters from $8$ letters $=^8C_4$

$=\frac{8!}{4!4!}$

$=70$

Hence there are $70$ different two-letter passwords can be formed using $8$ letters.

5 0

3 years ago

The size of a television screen is given by the length of its diagonal. What is the size of a television that has a width of 36

adelina 88 [10]

You need to use the Pythagorean theorem for this. Take the square root of (48^2 + 36^2). This will give you the length of the diagonal.

48^2 + 36^2 = 3600

Remember we need to take the square root of 3600, which is just 60.

The length of the diagonal is 60 inches.

7 0

3 years ago

Read 2 more answers

Find the surface area of this rectangular prism, Be sure to include the correct unit in your answer.

erma4kov [3.2K]

168 cm²

The surface area is the combined area of all the sides of a figure.

Four sides have an area of 36 cm², so 144 cm²

Two sides have an area of 12 cm², so 24 cm²

144+24 = 168 cm²

Hope this helps, and please consider marking branliest.

6 0

2 years ago