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3 years ago

Which two concepts are Newton´s laws based on?

Physics

2 answers:

natita [175]3 years ago

7 0

Answer:

Inertia and Force.

sukhopar [10]3 years ago

6 0

Instantaneous impulse and continuous force: these are the foundations of Newton laws. In short explanation; concept of force and mass.

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For 10 minutes, the wolf blew on the brick house with 5,000 N of force. How much work did he do?

frozen [14]

C.0 because it didn't move

8 0

3 years ago

Two small spheres spaced 20.0 cm apart have equal charge. How many excess electrons must be present on each sphere if the magnit

Snowcat [4.5K]

Answer:

894 electrons

Explanation:

The electrostatic force between the two charges is given by:

$F=\frac{k q_1 q_2}{r^2}$

where we have

$F=4.57\cdot 10^{-21} N$ is the force

k is the Coulomb's constant

q1 = q2 =q is the magnitude of the charge on each sphere

r = 20.0 cm = 0.20 m is the distance between the two spheres

Substituting and solving for q, we find the charge on each sphere:

$q=\sqrt{\frac{Fr^2}{k}}=\sqrt{\frac{(4.57\cdot 10^{-21} N)(0.20 m)^2}{9\cdot 10^9 Nm^2C^{-2}}}=1.43\cdot 10^{-16} C$

And since each electron has a charge of

$e=1.6\cdot 10^{-19}C$

the net charge on each sphere will be given by

$q=Ne$

where N is the number of excess electrons; solving for N,

$N=\frac{q}{e}=\frac{1.43\cdot 10^{-16}C}{1.6\cdot 10^{-19}C}=894$

7 0

4 years ago

an object which has a mass of 70 kg is sitting on a cliff 10 m high calculate the objects gravitational potential energy given g

Alex73 [517]

GPE = mgh (for objects close to earth where g can be considered to be constant) Where m is the mass, g is the acceleration due to gravity (which the question has told us to assume is 10ms^-2), and h is the height of the object.

Substituting the values in:
GPE = 70*10*10 = 7000J

5 0

3 years ago

1. define feed

Hatshy [7]

Answer:

1.Animal feed is food given to domestic animals in the course of animal husbandry

2.) Roughages B) Concentrates C) Feed supplements and Feed additives

3. Feed grains

4.pliers, vacuum lifters, magnetic lifters, and stock positioners

Explanation:

1.Animal feed is food given to domestic animals in the course of animal husbandry

2.) Roughages B) Concentrates C) Feed supplements and Feed additives

3. Feed grains 

4.pliers, vacuum lifters, magnetic lifters, and stock positioners

7 0

3 years ago

In the diagram, the Sun, Earth, and Moon are in perfect alignment. Which two conclusions can be drawn based on the diagram?

AysviL [449]

Answer:

I know one answer is an observer on earth sees a lunar eclipse

4 0

3 years ago

Read 2 more answers