The most likely event to occur due to the interaction between the Earth's magnetic field and charged particles blowing away from the sun would be "B. auroras are visible at the poles". The auroras form when when charged particles which are emitted from the sun enter the Earth's magnetic shield and collide with atoms in our atmosphere.
From the calculations, the value of the acceleration due to gravity is 0.38 m/s^2.
<h3>What is weight?</h3>
The weight of an object is obtained as the product of the mass of the body and the acceleration due to gravity.
Thus;
When;
mass = 120 kg
weight = 46 N
acceleration due to gravity = 46 N/120 kg
=0.38 m/s^2
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First you calculate how long it will take for the object to fall the 90 meters. We'll take Earth's gravity acceleration as 9.8m/s²
<em />
<em>Equation:</em>
x = x₀ + v₀ * (t - t₀) + 1/2 * a * (t - t₀)²
x -> Final position in meters
x₀ -> Starting position
v₀ -> Starting velocity
t -> Final time
t₀ -> Starting time
a -> Acceleration
<em>Our case:</em>
x = 0
x₀ = 90m
v₀ = 0m/s
t = ?
t₀ = 0
a = -9.8m/s² (Minus 9.8 because it's on top of a cliff (90m) and it's falling to ground level (0m), so it's substracting)
0 = 90 - 1/2 * 9.8 * (t - 0)²
0 = 90 - 4.9t²
4.9t² = 90
t² = 90/4.9
t = √(18.36) = 4.28 seconds
To calculate the speed, just multiply the seconds it takes to hit the ground by the acceleration of Earth's gravity:
4.28 * 9.8 = 42m/s
Answer: The mass of 0.5 mole of element ab is 81.67 g.
Explanation:
According to the mole concept, 1 mole of a substance contains . As, the mass of atoms is 0.49 g.
So,
Therefore, mass of 1 mole =
= 163.33 g/mol
Hence, mass of 0.5 mole of ab element is calculated as follows.
= 81.67 g
Therefore, the mass of 0.5 mole of element ab is 81.67 g.
Answer:
The direction of the force will be towards the east
Explanation:
From the question we are told that
The direction of the downward
Generally according to Fleming's right-hand rule(
Thumb - direction of force
Middle finger - direction of current
Index finger - direction of the magnetic field
) and the fact that the earth magnetic field acts from south to north with respect to the four cardinal points then the direction of the force will be toward the east with respect to the four cardinal point on the earth