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castortr0y [4]
3 years ago
11

Why is the weight of an object on the moon 1/6 th its weight on the earth?

Physics
1 answer:
ehidna [41]3 years ago
7 0

The mass of moon is 1/100 times and its radius 1/4 times that of earth as a result the gravitational attraction on the moon is about one sixth when compared to earth.

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A ball is thrown up with a speed of 15m/s. How high will it go before it begins to fall? ( g = 10m/s2 )
LekaFEV [45]

Answer:

Height is 11.25m

Explanation:

<u>Given the following data;</u>

Initial velocity, u = 0

Final velocity, v = 15m/s

Acceleration due to gravity, g = 10m/s²

To find the height, we would use the third equation of motion;

V^{2} = U^{2} + 2aS

Where;

  • V represents the final velocity measured in meter per seconds.
  • U represents the initial velocity measured in meter per seconds.
  • a represents acceleration measured in meters per seconds square.
  • S represents the displacement (height) measured in meters.

V^{2} = U^{2} + 2aS

<em>Making S the subject, we have;</em>

S = \frac {V^{2} - U^{2}}{2a}

But a = g = 10m/s²

<em>Substituting into the equation, we have;</em>

S = \frac {15^{2} - 0^{2}}{2*10}

S = \frac {225 - 0}{20}

S = \frac {225}{20}

S = 11.25m

<em>Therefore, the ball will reach a height of 11.25m before it begins to fall. </em>

4 0
2 years ago
Define Ordinary Thermometer​
deff fn [24]

Answer:

An ordinary thermometer is commonly referred to as a dry-bulb thermometer. Most people use this thermometer to measure other types of temperature, such as humidity levels or the outside temperature. This thermometer can show higher temperatures because it is built to withstand different temperature ranges.

Explanation:

5 0
3 years ago
What conclusion can be draw about the heat of fusion of water from the heating curve?
PtichkaEL [24]

Answer: C) The kinetic energy and the entropy of the water molecules increases through fusion.

Explanation:

7 0
3 years ago
Read 2 more answers
Liquids with convex meniscus​
kobusy [5.1K]

Mercury in a glass tube.

7 0
2 years ago
A thin, flat washer is a disk with an outer diameter of 14 cm and a hole in the center with a diameter of 7 cm. The washer has a
Kryger [21]

Answer:

2583.9 N/C

Explanation:

Parameters given:

Outer diameter = 14 cm

Outer radius, R = 7cm = 0.07m

Inner diameter = 7 cm

Inner radius, r = 3.5 cm = 0.035m

Charge of washer = 8 nC = 8 * 10^(-9)C

Distance from washer, z = 33 cm = 0.33m

The electric field due to a washer (hollow disk) is given as:

E = k * σ * 2π [ 1 - z/(√(z² + R²)]

Where σ = charge per unit area

σ = q/π(R² - r²)

σ = 8 * 10^(-9) /(π*(0.07 - 0.035)²)

σ = 2.077 * 10^(-6) C/m²

=> E = 9 * 10^9 * 2.077 * 10^(-6) * 2π * [1 - 0.33/(√(0.33² + 0.07²)]

E = 117.467 * 10^3 * (1 - 0.978)

E = 117.467 * 10^3 * 0.022

E = 2583.9 N/C

6 0
3 years ago
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