Objects with greater mass have a weaker force of gravity between them.

True
False

Answers

Answer 1

Answer: False, more massive objects exert a stronger gravitational force.

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The intensity of radioactive sample is commonly measured using a(n) _____.

How to find the period of a wave

Answers

The method to choose depends on what information you have, and
on what you can measure. Here are a few possible methods:

-- Measure the period. Start your clock when one peak
of the wave passes you. Stop the clock when the next
peak passes you. The time between the two peaks is
the wave's period.

-- Divide the wave's wavelength by its speed. That quotient
is the wave's period.

-- Use an electronic frequency meter to measure the wave's
frequency. Then take its reciprocal (divide ' 1 ' by it). The
result is the wave's period.

What is the purpose of the Climate Friendly Farming Project?

Answers

The Climate Friendly Farming Project was designed to provide funding for long term research into the sustainability and adaptability of agricultural systems(wheat, vegetables, and dairy systems) as increasing greenhouse gases propagate and decline the efficiency of current agricultural practice.

Answer:

The purpose of the Climate Friendly Farming Project is to create a database of climate friendly agricultural practices

Explanation:

Edge

1. What is meant by half-life?The time for a radioactive sample to reduce to half of its radioactivity.
The time for half of a radioactive sample to decay into new substances.
The time for a radioactive sample to reduce to half of its original mass.
The time for half of a radioactive sample to lose its radioactivity.

4. The isotope uranium-232 has a half-life of 68.9 years. How long will it take for 60% (N/N0 = 0.60) of the original sample to decay?

5.8 years
50.8 years
93.5 years
407 years

5. The isotope barium-133 has a half-life of 10.51 years. Of a 10 kg sample, how much will remain after 50 years?

0.37kg
4.53kg
8.64kg
270kg
6. A piece of bone from a horse found in an archaeological site is dated using carbon-14 dating. It is found that the bone has 78% of the carbon-14 that it would have when the horse was alive. Approximately how long ago did the horse die?

900 years ago
2,000 years ago
14,100 years ago
35,800 years ago
7. At an physics research facility 0.0027 kg of a new isotope is made in an atomic collider. After 6 seconds, 0.00147 kg remain. What is the half-life of the isotope?

0.25 seconds
5.26 seconds
6.84 seconds
500 seconds

Answers

1. The time for a radioactive sample to reduce to half of its original mass.
4. 10% of 232 is 23.2 times 6 equals 139.2
68.9 x6 equals 413.4
5. 0.37kg
6. 2000 years
7. 6.84 seconds

Force of attraction between the Earth(m=5.98x10^24) and a 70 kg student. distance of 6.38x10^6

Answers

F=G(m₁m₂/r²)
= 9.81(70*5.98x10²⁴/6.38x10⁶)
=9.81(6.56x10³¹)
=6.44x10³²

How are galaxies created

Answers

Hi There! :)

How are galaxies created

Instead of large gas clouds collapsing to form a galaxy in which the gas breaks up into smaller clouds, it is proposed that matter started out in these “smaller” clumps (mass on the order of globular clusters), and then many of these clumps merged to form galaxies, which then were drawn by gravitation to form galaxy ...

Hi!Galaxies are thought to begin as small clouds of stars and dust swirling through space. As other clouds get close, gravity sends these objects careening into one another and knits them into larger spinning packs.

When a star is in the main-sequence stage of its life, it is fusing __________ into ________