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serg [7]
3 years ago
7

WILL GIVE 30 points no scams or I will report and delete Describe three machines that humans have designed and explain how the m

echanical advantage
Physics
1 answer:
Stella [2.4K]3 years ago
5 0

Answer:

The three machines that the human can used for designed is wheel axle , lever, inclined plane etc,...

Explanation:

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_____ is not a hormone.
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Answer:

So, the correct answer is 'Melatonin'.

Explanation:

thank me later

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3 years ago
In 3 seconds a car moving in a straight line increases its speed from 22.4 m/s to 29.1 m/s while a truck increases its speed fro
ANTONII [103]
Is there a picture?
6 0
3 years ago
A three-way 120 V lamp bulb that contains two filaments is rated for 100-200-300 W. One filament burns out. Afterward, the bulb
ololo11 [35]

Answer:

The larger resistance value is 144 ohms and the smaller resistance value is 48 ohms.

Explanation:

Given that Resistance, R, is inversely proportional to Power, the largest value of power will yield the smallest value of resistance and vice versa.

The largest value of resistance will be:

P = V²/R

R = V²/P

R = 120²/100

R = 144 ohms

The smallest value of resistance will be:

R = 120²/300

R = 48 ohms

8 0
4 years ago
23. Lunar Gravity Compare the force holding a
romanna [79]

Explanation:

Given

mass of the rock is 10 kg

Force requires to hold the rock is equal to its weight

Weight is given by the product of mass and acceleration due to gravity

Weight on the earth surface

\Rightarrow W_e=10\times 9.8\\\Rightarrow W_e=98\ N

Weight on the moon surface

\Rightarrow W_m=1.6\times 10\\\Rightarrow W_m=16\ N

So, the force holding the rock on earth is approximately 6 times the force on the moon.

3 0
3 years ago
A smooth wooden block is placed on a smooth wooden tabletop. You find that you must exert a force of 22.0 N to keep this 7.00 kg
xxMikexx [17]

Answer:

B . 68.7 N

Explanation:

Given in the question that;

Force = 22 N

Mass = 7.0 kg

Velocity = 4.0 m/s

Gravitational force is the weight of wooden block , calculated as mass times acceleration due to gravity.

F= m* a

F= 7 * 9.81

F= 68.67 N

F= 68.7 N

7 0
3 years ago
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