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3 years ago

A car travels 36 km in 30 minutes. The speed of the car is

Physics

1 answer:

iogann1982 [59]3 years ago

7 0

Answer:

72km/hr

Explanation:

Speed in Km is usually represented in hours. so if the car is in constant velocity, and if the car travels 36km in 30 min then it travels 72km in 1 hour.

so the speed of the car is 72km/hr

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Crank

Energy of gamma rays is given by equation

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here we know that

h = Planck's constant

$\nu = frequency$

now energy is given as

$E = 4.70 MeV = 4.70 \times 10^6 \times 1.6 \times 10^{-19}$

$E = 7.52 \times 10^{-13} J$

now by above equation

$E = h\nu$

$7.52 \times 10^{-13} = 6.6 \times 10^{-34} \nu$

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now for wavelength we can say

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$\lambda = \frac{3\times 10^8}{1.14 \times 10^{21}}$

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3 years ago

Correct Number Formats Numbers may be entered in several formats - including scientific notation and numerical expressions.

Illusion [34]

Answer:

a. Valid

b. Invalid

c. Invalid

d. Invalid

e. Valid

f. Valid

g. Invalid

Explanation:

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Therefore, this number is Valid

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Therefore, it is Invalid

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Therefore, it is Invalid

Since, it follows all the four rules,

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Therefore, this number is Valid

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6 0

3 years ago

IMPORTANT!!! DUE IN 5 MINS I NEED HELP PLEASE

Ket [755]

Answer:

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Explanation:

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2 years ago

The Force of friction between an object and the surface upon which it is sliding is 12N. The weight of the object is 20N. What i

VashaNatasha [74]

Answer:

Explanation:

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3 years ago

Explain in detail what information can be learn about atoms of different elements by examining the periodic table . For the Maxi

raketka [301]

Answer:

We know the information about atomic size, energy, electronic configuration etc. of atom from the periodic table.

Explanation:

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3 years ago