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Olegator [25]
4 years ago
7

You weigh 716 newtons on Earth. You

Physics
1 answer:
Otrada [13]4 years ago
8 0

Answer:

537 N

Explanation:

The force due to gravity of a planet is:

F = GMm / r²

where G is the universal gravitational constant

M is the mass of the planet

m is the mass of the object

and r is the distance between the object and the center of the planet

On Earth, you weigh 716 N, so:

716 N = GMm / r²

On planet X:

F = G (3M) m / (2r)²

F = 3/4 GMm / r²

F = 3/4 (716 N)

F = 537 N

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Two beams of coherent light are shining on the same sheet of white paper. when referring to the crests and troughs of such waves
tensa zangetsu [6.8K]
Middle of the paper
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4 years ago
What can one say for sure about element #99, Einsteinium (Es))? a) There's no such element! b) It is an alkali metal. c) It is r
Dmitrij [34]

Answer:

Option (C)

Explanation:

Einsteinium is an element of the periodic table grouped in the Actinide series, with atomic number 99. They are dense element and highly electro-positive. <u>They are highly radioactive</u>, i.e the atoms within the element are unstable and constantly decay until they reach a stable environment. It has 99 number of electrons and protons, 153 number of neutrons.

Due to its high radioactivity, they are health hazardous and can used in making nuclear weapons but their uses are very limited and unknown.

Thus, the correct answer is option (C).

8 0
4 years ago
In the 2016 Olympics in Rio, after the 50 mm freestyle competition, a problem with the pool was found. In lane 1 there was a gen
gogolik [260]

Answer:

Explanation:

still water speed is 50 m / 25.0 s = 2.00 m/s or 200 cm/s

In lane 1 the effective speed would be 201.2 cm/s

5000 cm / 201.2 cm/s = 24.85 s

The change is 25.00 - 24.85 = 0.15 s decrease in time

In lane 8, the effective speed would be 198.8 cm/s

5000 cm / 198.8 cm/s = 25.15 s

The change is 25.00 - 25.15 = 0.15 s increase in time

6 0
3 years ago
The electrical loads in _____ circuits each have the same voltage drop, with equals the total applied voltage of the circuit.
Vesna [10]

Answer:

The electrical loads in parallel circuits each have the same voltage drop, with equals the total applied voltage of the circuit.

Explanation:

I did some research and the voltage drop across any branch of a parallel circuit is the same as the applied voltage.

3 0
2 years ago
In a downhill ski race, surprisingly, little advantage is gained by getting a running start. (This is because the initial kineti
Sergio [31]

Answer:

Part a)

v_f = 25.2 m/s

t = 5.48 s

Part b)

v_f = 25.32 m/s

t = 4.96 s

Explanation:

Part a)

When ski start from rest

v_f^2 - v_i^2 = 2 a d

on this inclined plane we know that the acceleration is given as

a = g sin\theta

a = 9.81 sin28

a = 4.6 m/s^2

now for final speed

v_f^2 - v_i^2 = 2 a d

v_f^2 - 0 = 2(4.6)(69)

v_f = 25.2 m/s

now time taken by the ski to reach the bottom is given as

v_f = v_i + at

25.2 = 0 + 4.6 t

t = 5.48 s

Part b)

Now when ski start with initial speed of 2.5 m/s

then we will have

v_f^2 - v_i^2 = 2 a d

v_f^2 - 2.5^2 = 2(4.6)(69)

v_f = 25.32 m/s

now time taken by the ski to reach the bottom is given as

v_f = v_i + at

25.32 = 2.5 + 4.6 t

t = 4.96 s

3 0
3 years ago
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