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4 years ago

Which of the following do cutoffs form in a meandering river

1 answer:

8 0

Answer: An oxbow lake forms after there has been deposition of sediment, by the new cutoff channel flowing adjacent to it, at the entrances of the abandoned bend; this seals the bend off from the rest of the river.

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A spinning top initially spins at 16rad/s but slows down to 12rad/s in 18s, due to friction. If the rotational inertia of the to

Alex Ar [27]

Answer:

The change in angular momentum is $\Delta L = 0.0016 \ kgm^2/s$

Explanation:

From the question we are told that

The initial angular velocity of the spinning top is $w_1 = 16 \ rad/s$

The angular velocity after it slow down is $w_2 = 12 \ rad/s$

The time for it to slow down is $t = 18 \ s$

The rotational inertia due to friction is $I = 0.0004 \ kg \cdot m^2$

Generally the change in the angular momentum is mathematically represented as

$\Delta L = I *(w_1 -w_2)$

substituting values

$\Delta L = 0.0004 *(16 -12)$

$\Delta L = 0.0016 \ kgm^2/s$

5 0

3 years ago

A space probe is directly between two moons of a planet. If it is twice as far from moon A as it is from moon B, but the net for

Dennis_Churaev [7]

Answer:

c. Moon A is four times as massive as moon B

Explanation:

Let's assume the:

mass of the object = $m\,kilogram$

mass of the moon A = $M_A\,kilogram$

mass of the moon B = $M_B\,kilogram$

distance between the center of masses of the object and moon B = $r\,meters$

According to the given condition the object is twice as far from moon A as it is from moon B

∴distance between the center of masses of the object and moon B = $2r\,meters$

<u>As we know, gravitational force of attraction is given by:</u>

$F=G\frac{m_1.m_2}{r^2}$

<em>According to the condition</em>

Force on m due to $M_B=$ Force on m due to $M_A$

$G\frac{m.M_A}{(2r)^2} =G\frac{m.M_B}{(r)^2}$

$\frac{M_A}{4r^2} =\frac{M_B}{r^2}$

$M_A=4M_B$

3 0

3 years ago

Lightning bolts can carry currents up to approximately 20 kA. We can model such a current as the equivalent of a very long, stra

GalinKa [24]

Answer:

how large a magnetic field would you experience = 8.16 x 10∧-4T

Explanation:

I = 20KA = 20,000A

r = 4.9 m

how large a magnetic field would you experience = u.I/2πr

how large a magnetic field would you experience = (4π x10∧-7) × 20000/2π × 4.9

how large a magnetic field would you experience = 8.16 x 10∧-4T

4 0

3 years ago

Read 2 more answers

Something about the earth's surface (land or water) changes

Leokris [45]

I would say land changes.

6 0

3 years ago

Why is density and the melting point both substances of mass

maw [93]

Density is mass over volume. Density is also a charecteristic property wich defines a substance and two different substance cant have the same charasteristic property.

3 0

4 years ago