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4 years ago

The force of gravity decreases if two objects have

2 answers:

7 0

The force of gravity between two objects will decrease as the distance between them increases. The two most important factors affecting the gravitational force between two objects are their mass and the distance between their centers. As mass increases, so does the force of gravity, but an increase in distance reflects an inverse proportionality, which causes that force to decrease exponentially.

hope this can help ^_^

Korvikt [17]4 years ago

5 0

Mass and distance affect the force of gravity.

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Vector A with arrow lies in the xy plane. Both of its components will be negative if it points from the origin into which quadra

Blizzard [7]

Answer:

Explanation:

From the question we are told that a vector on the x and y plane face their negative axis

Generally in the x and y plane thr negative y axis is made to face down opposite the positive y axis

Whilst the negative x axis faces the left which is also alternate to the positive x axis

Generally A vector pointing towards the x and y negative axis fro the origin (0) will definitely be in the third quadrant

8 0

3 years ago

Calculate the pressure exerted on a surface by a brick of weight 10 N. The area in contact with the surface is 20 cm2

anzhelika [568]

Answer:

Explanation:

Force of brick = 10 N

Area of surface = 20 cm^2

Pressure = force / area

∴ Pressure = 10 / 20

= 1 / 2 or 0.5 Pa

Hope this hepls

plz mark it as brainliest!!!!!!!!

7 0

3 years ago

Read 2 more answers

2. Three charged particles are placed at the corners of an equilateral triangle of side 1.20 m. The charges are +7.0μC, -8.0 μC

Scorpion4ik [409]

Answer:

0.53 N, 25.6°

Explanation:

side of triangle, a = 1.2 m

q = 7 μC

q1 = - 8 μC

q2 = - 6 μC

Let F1 be the force between q and q1

By using the coulomb's law

$F_{1}=\frac{Kq_{1}q}{a^{2}}$

$F_{1}=\frac{9\times 10^{9}\times 7\times 10^{-6}\times 8\times 10^{-6}}{1.2^{2}}$

F1 = 0.35 N

Let F2 be the force between q and q2

By using the coulomb's law

$F_{2}=\frac{Kq_{2}q}{a^{2}}$

$F_{2}=\frac{9\times 10^{9}\times 7\times 10^{-6}\times 6\times 10^{-6}}{1.2^{2}}$

F2 = 0.26 N

Write the forces in the vector form

$\overrightarrow{F_{1}}=0.35\widehat{i}$

$\overrightarrow{F_{2}}=0.26\left ( Cos60 \widehat{i}+Sin60\widehat{j}\right )$

$\overrightarrow{F_{2}}=0.13 \widehat{i}+0.23\widehat{j}$

Net force

$\overrightarrow{F}=\overrightarrow{F_{1}}+\overrightarrow{F_{2}}$

$\overrightarrow{F}=0.48 \widehat{i}+0.23\widehat{j}$

Magnitude of the force

$F=\sqrt{0.48^{2}+0.23^{2}}$

F = 0.53 N

Direction of force with x axis

$tan\theta =\frac{0.23}{0.48}$

θ = 25.6°

7 0

3 years ago

A flowerpot falls off a windowsill and falls past the window below. You may ignore air resistance It takes the pot 0.420 s to pa

eduard

Answer:

the distance of the top of the window below the windowsill from which the flowerpot fell is 0.31 m

Explanation:

given information:

time, t = 0.420 s

height, h = 1.9 m

the the vertical motion equation:

h = $v_{0}$ t + $\frac{1}{2} gt^{2}$

where

h = height (m)

$v_{0}$ = initial velocity (m/s)

t = time (s)

g = gravitational force (9.8 $m/s^{2}$ )

first we calculate the velocity of the flowers pot when it reaches top window

h = $v_{0}$ t + $\frac{1}{2} gt^{2}$

1.9 = $v_{0}$ (0.42) + ( $\frac{1}{2} 9.8 0.42^{2}$ )

$v_{0}$ = (1.9 - ( $\frac{1}{2} 9.8 0.42^{2}$ ))/0.42

= 2.47 m/s

now we can find the distance of the windowsil

$v^{2} =v_{0} ^{2}$ + 2gh

v = 0, thus

2gh = - $v_{0}^{2}$

h = - $v_{0}^{2}$ /2g

= $(- 2.47^{2} )$ / (2 x 9.8)

= 0.31 m

6 0

3 years ago

Using at least 3 to 4 complete content related sentences describe the first and second postulate of special relativity.

Andrew [12]

Nothing can travel faster than the speed of light. As such, perceptions of objects and time change as they approach light speed, but the laws of physics remain consistent regardless of speed. Objects will appear shortened and time will appear to slow down around an observer approaching near light speeds, but all quantities still exist as they did before and all causality is preserved, even if observers in different points or traveling at different speeds will report different things.

8 0

4 years ago

Read 2 more answers