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Alja [10]
3 years ago
10

The mass of an object changes as the distance from the center of gravity changes.

Physics
1 answer:
Alchen [17]3 years ago
8 0

Answer:

true

Explanation:

this is the answer to this question

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Find the lengths of each of the following vectors
Irina18 [472]

Answer:

Explanation:

Generally, length of vector means the magnitude of the vector.

So, given a vector

R = a•i + b•j + c•k

Then, it magnitude can be caused using

|R|= √(a²+b²+c²)

So, applying this to each of the vector given.

(a) 2i + 4j + 3k

The length is

L = √(2²+4²+3²)

L = √(4+16+9)

L = √29

L = 5.385 unit

(b) 5i − 2j + k

Note that k means 1k

The length is

L = √(5²+(-2)²+1²)

Note that, -×- = +

L = √(25+4+1)

L = √30

L = 5.477 unit

(c) 2i − k

Note that, since there is no component j implies that j component is 0

L = 2i + 0j - 1k

The length is

L = √(2²+0²+(-1)²)

L = √(4+0+1)

L = √5

L = 2.236 unit

(d) 5i

Same as above no is j-component and k-component

L = 5i + 0j + 0k

The length is

L = √(5²+0²+0²)

L = √(25+0+0)

L = √25

L = 5 unit

(e) 3i − 2j − k

The length is

L = √(3²+(-2)²+(-1)²)

L = √(9+4+1)

L = √14

L = 3.742 unit

(f) i + j + k

The length is

L = √(1²+1²+1²)

L = √(1+1+1)

L = √3

L = 1.7321 unit

3 0
2 years ago
A feather and a minivan are dropped vertically downward from a height of twenty meters and both are subject to air drag as they
Luda [366]

Answer:

maybe C i'm not 100% sure

I'm sorry if this didn't help

Explanation:

6 0
2 years ago
Disturbances inside Earth’s core cause earthquakes. The starting point of the disturbance is called the epicenter. Why does the
Natali [406]
The waves lose energy in the form of heat. The frequency of the waves continues to increase. Disturbances inside Earth's core cause earthquakes. The starting point of the disturbance is called the epicenter.

5 0
3 years ago
Read 2 more answers
I’ll name u BRAINLIEST if u get this right
nekit [7.7K]
V = m1 u1 - m2 u2 / m1
v = 0.01 * 500 - 2 * 1.4 / 0.01
v = 220 m/s
7 0
2 years ago
_____________ radiation is the least harmful type of radiation.
Alja [10]

Explanation:

Alpha radiation is the least harmful type of radiation.

plz give me brainliest

4 0
3 years ago
Read 2 more answers
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