Approximate Lake Superior by a circle of radius 162 km at a latitude of 47°. Assume the water is at rest with respect to Earth and find the depth that the center is depressed with respect to the shore due to the centrifugal force.

Answers

Answer 1

The center of Lake Superior is depressed by 5.2 meters due to the centrifugal force at a radius of 162 km and a latitude of 47°.

When a body rotates, objects on its surface are subject to centrifugal force which causes them to move away from the center.

In this case, Lake Superior is assumed to be at rest with respect to Earth and a circle of radius 162 km at a latitude of 47° is drawn around it.

Using the formula for centrifugal force, the depth that the center of the lake is depressed with respect to the shore is calculated to be 5.2 meters.

This means that the water at the center of Lake Superior is pushed outwards due to the centrifugal force, causing it to be shallower than the shore.

Understanding the effects of centrifugal force is important in many areas of science and engineering.

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Related Questions

The net force on any object moving at constant velocity is a. equal to its weight. b. less than its weight. c. 10 meters per second squared. d. zero.

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The net force on any object moving at constant velocity is zero. Option d. is correct .

An object moving at constant velocity has balanced forces acting on it, which means the net force on the object is zero. This is due to Newton's First Law of Motion, which states that an object in motion will remain in motion with the same speed and direction unless acted upon by an unbalanced force. This is due to Newton's first law of motion, also known as the law of inertia, which states that an object at rest or in motion with a constant velocity will remain in that state unless acted upon by an unbalanced force.

When an object is moving at a constant velocity, it means that the object is not accelerating, and therefore there must be no net force acting on it. If there were a net force acting on the object, it would cause it to accelerate or decelerate, changing its velocity.

Therefore, the correct answer is option (d) - the net force on any object moving at a constant velocity is zero.

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compared with compounds such as sodium chloride, the wax produced by bees has a low boiling point. which best explains this property of beeswax?

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The low boiling point of beeswax is a result of its chemical composition, which is different from that of ionic compounds such as sodium chloride, as well as its natural function in the hive.

The low boiling point of beeswax compared to compounds such as sodium chloride can be attributed to its chemical composition. Beeswax is a complex mixture of hydrocarbons, fatty acids, and esters that have a relatively low molecular weight and weak intermolecular forces between the molecules.

This results in a lower boiling point compared to ionic compounds like sodium chloride, which have strong electrostatic attractions between the ions and require a higher temperature to break these bonds and vaporize.

Additionally, beeswax is a natural substance that is produced by bees and is intended to melt and flow at relatively low temperatures to facilitate their hive construction. As a result, it has evolved to have a lower boiling point to enable it to melt and be manipulated by the bees.

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Calculate the angular separation of two Sodium lines given as 580.0nm and 590.0 nm in first order spectrum. Take the number of ruled lines per unit length on the diffraction grating as 300 per mm?
(A) 0.0180
(B) 180
(C) 1.80
(D) 0.180

Answers

The angular separation of two Sodium lines is calculated as (C) 1.80.

The angular separation between the two Sodium lines can be calculated using the formula:

Δθ = λ/d

Where Δθ is the angular separation, λ is the wavelength difference between the two lines, and d is the distance between the adjacent ruled lines on the diffraction grating.

First, we need to convert the given wavelengths from nanometers to meters:

λ1 = 580.0 nm = 5.80 × 10⁻⁷ m
λ2 = 590.0 nm = 5.90 × 10⁻⁷ m

The wavelength difference is:

Δλ = λ₂ - λ₁ = 5.90 × 10⁻⁷ m - 5.80 × 10⁻⁷ m = 1.0 × 10⁻⁸ m

The distance between adjacent ruled lines on the diffraction grating is given as 300 lines per mm, which can be converted to lines per meter:

d = 300 lines/mm × 1 mm/1000 lines × 1 m/1000 mm = 3 × 10⁻⁴ m/line

Substituting the values into the formula, we get:

Δθ = Δλ/d = (1.0 × 10⁻⁸ m)/(3 × 10⁻⁴ m/line) = 0.033 radians

Finally, we convert the answer to degrees by multiplying by 180/π:

Δθ = 0.033 × 180/π = 1.89 degrees

Rounding off to two significant figures, the answer is:

(C) 1.80

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Consider three identical metal spheres, a, b, and c. sphere a carries a charge of 5q. sphere b carries a charge of -q. sphere c carries no net charge. spheres a and b are touched together and then separated. sphere c is then touched to sphere a and separated from it. lastly, sphere c is touched to sphere b and separated from it.

required:
a. how much charge ends up on sphere c?
b. what is the total charge on the three spheres before they are allowed to touch each other?

Answers

a. Sphere c ends up with a charge of -3q.

b. The total charge on the three spheres before they are allowed to touch each other is 5q - q = 4q.

a. When spheres a and b are touched together and then separated, charge is transferred between them until they reach equilibrium. Since sphere a has a charge of 5q and sphere b has a charge of -q, the total charge transferred is 5q - (-q) = 6q. This charge is shared equally between the two spheres, so sphere a ends up with a charge of 5q - 3q = 2q, and sphere b ends up with a charge of -q + 3q = 2q.

When sphere c is touched to sphere a and separated, they share charge. Sphere a has a charge of 2q, and sphere c has no net charge initially. The charge is shared equally, so both spheres end up with a charge of q.

Similarly, when sphere c is touched to sphere b and separated, they also share charge. Sphere b has a charge of 2q, and sphere c has a charge of q. The charge is shared equally, so both spheres end up with a charge of (2q + q) / 2 = 3q/2.

Therefore, sphere c ends up with a charge of -3q (opposite sign due to excess electrons) and the total charge on the three spheres before they are allowed to touch each other is 5q - q = 4q.

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