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3 years ago

A man has a mass of 66kg on earth. what is his weight?

1 answer:

7 0

So 1 kg = 2.2 pounds.
66kg | 2.2 pounds
--------| ------------------
| 1kg

I set it up like this. The 66 kg crosses out with the 1kg. So you multiply the top 66 x 2.2 = 145.2 pounds

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Using what you know about acids, bases and pH. Predict what will happen when vinegar is mixed with water. How would mixing bakin

IRINA_888 [86]

Use the pH scale. When vinegar is mixed with water, the pH is 2.4 to 2.6. Baking soda and water has a pH of 9 to 11. this is because baking soda makes water alkaline.

8 0

3 years ago

How much would you have to shrink a baseball to a black hole?

Vesna [10]

The Schwarzchild radius is . . . R = 2GM/c² .

Just like you, I'm not completely sure what that means. But it DOES use the mass of a black hole to calculate a radius associated with it, so with 15 Brainly points at stake, it seems like a good-enough formula to use for an answer.

Before I proceed, I really should ask you whether you're talking a softball or a hardball, but again . . . . .

So R = 2GM/c²

G = the gravitational constant = 6.67 x 10⁻¹¹ N-m²/kg²

M = mass of the baseball = 145 grams = 0.145 kg

c = speed of light = 3 x 10⁸ m/s

R = 2 (6.67 x 10⁻¹¹ m³/kg-s²) (0.145 kg) / (3 x 10⁸ m/s)²

R = (2 x 6.67 x 10⁻¹¹ x 0.145 / 9 x 10¹⁶) (m³-kg-s² / kg-s²-m²)

R = ( 1.9343 x 10⁻¹¹ / 9 x 10¹⁶) (m³-kg-s²/m²-kg-s²)

R = (0.2149 x 10⁻²⁷) meter

R = 2.149 x 10⁻²⁸ meter

For reference: The radius of a Hydrogen atom is 1.2 x 10⁻¹⁰ meter.

So in order to make a black hole out of a baseball, you have to crunch the baseball down to around 0.000000000000000001791 the size of a Hydrogen atom.

Would that be a problem for you ?

3 0

3 years ago

How is periodicity of properties dependent upon number of protons in an atom?

netineya [11]

Depending on the charge.

3 0

4 years ago

Read 2 more answers

1. The arctic tern flies from the Arctic to the Antarctic and back every year, a total distance of 22,000 miles! In late summer,

NikAS [45]

Answer:

The average velocity that these birds travel is 122.22 miles per day to the south.

Explanation:

Speed is the physical quantity that expresses the variation in position of an object and as a function of time. In other words, speed is a physical quantity that expresses the relationship between the space traveled by an object, the time used for it and its direction.

Speed is expressed mathematically as the quotient between distance and time:

$v=\frac{d}{t}$

where "v" is the speed of the mobile, "d" is the distance traveled by the mobile, and "t" is the time taken by the mobile to carry out the movement.

In this case:

d= 11,000 miles
t=3 months= 90 days ( considering that in 1 month there are 30 days)

Replacing:

$velocity=\frac{11,000 miles}{90 days}$

velocity = 122.22 $\frac{miles}{day}$

The average velocity that these birds travel is 122.22 miles per day to the south.

8 0

3 years ago

Correlation alone_____ causation A.proves B.complicates C. Disproves D. does not prove

tatuchka [14]

Answer:

Explanation:

This is the essence of “correlation does not imply causation”. When there is a common cause between two variables, then they will be correlated. This is part of the reasoning behind the less-known phrase, “ There is no correlation without causation ”.

5 0

4 years ago