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melisa1 [442]
3 years ago
7

George has a mass of 65kg. What would George weigh on the Moon? (The gravitational field strength on the Moon is 1.6N/kg.)

Chemistry
2 answers:
sergey [27]3 years ago
8 0

Answer:

The weight of George on Moon is 104 N

Explanation:

Weight is called the action exerted by the force of gravity on the body.

The mass (amount of matter that a body contains) of an object will always be the same, regardless of where it is located. Instead, the weight of the object will vary according to the force of gravity acting on it.

The formula that allows you to calculate the weight of any body is:

P = m * g

where:

P = weight measured in N.

m = mass measured in kg.

g = acceleration of gravity measured in m / s²

But in this case the weight of George on the moon can be calculated as the mass of George multiplied by the intensity of the gravitational field.

weight of George on Moon = George's Mass*Gravitational field strength

weight of George on Moon=65 kg* 1.6 \frac{N}{kg}

weight of George on Moon=104 N

So <u><em>the weight of George on Moon is 104 N</em></u>

dem82 [27]3 years ago
5 0

Answer:

\boxed{\large \text{104 N}}  

Explanation:

\text{Weight} = \text{65 kg} \times \dfrac{\text{1.6 N}}{\text{1 kg}} = \textbf{104 N}\\\\\text{George would weigh $\boxed{\large \textbf{104 N}}$ on the moon}

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Aluminum–lithium (Al–Li) alloys have been developed by the aircraft industry to reduce the weight and improve the performance of
brilliants [131]

Answer:

6.54% is the required concentration of lithium in an alloy (Al–Li).

Explanation:

Suppose 100 grams of an alloy of aluminium and lithium.

Density of an alloy = d  2.14 g/cm^3

Volume of an alloy = V

V=\frac{100 g}{2.14 g/cm^3}=46.73 cm^3

Volume of aluminum = v_1

Mass of aluminum = x

Density of aluminum = d_1=2.71 g/cm^3

v_1=\frac{x}{d_1}

Volume of lithium = v_2

Mass of lithium = y

Density of lithium= d_2=0.534 g/cm^3

v_2=\frac{y}{d_2}

x+y=100 ..[1]

v_1+v_2=V

\frac{x}{d_1}+\frac{y}{d_2}=46.73 cm^3

\frac{x}{2.71}+\frac{y}{0.534}=46.73..[2]

Solving [1] and [2] :

we get :

x = 93.46 g

y = 6.54 g

Concentration of Li (in wt%) that is required:

Li\%=\frac{6.54 g}{100 g}\times 100=6.54\%

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3 years ago
Temperature is a measure of how much heat you have in, or around you. is it true or false
allochka39001 [22]

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true

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A boy swings a rubber ball attached to a string over his head in a horizontal, circular path. The piece of string is 1.15 m long
gregori [183]

Answer:

v = 16.49 m/s

Explanation:

Given that,

Length of the string, l = 1.15 m

The ball makes 137 complete turns each minute.

We know that, 1 turn = 6.28 rad

137 turns = 860.79 rad

1 min = 60 s

\omega=\dfrac{860.79\ rad}{60\ s}\\\\=14.34\ rad/s

We need to find the tangential velocity of the ball. It can be given by

v=r\omega\\\\=1.15\times 14.34\\\\v=16.49\ m/s

So, the tangential velocity of the ball is 16.49 m/s.

5 0
3 years ago
If one pound is the same as 454 grams, then convert the mass of 78 grams to pounds.
LiRa [457]

Answer:

0.17 lb

Explanation:

78 g * (1 lb/454 g)=0.17 lb

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