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Sophie [7]
3 years ago
5

Three forces are acting on an object as shown in the diagram. The object is not moving. Two forces are to newtons and 10 N. Thir

d force is:

Physics
1 answer:
dem82 [27]3 years ago
8 0

The object is not moving, so the net force acting on it is zero.

The two given forces act in the same direction with a total magnitude of 2 N + 10 N = 12 N.

The third force acts counter to these with some magnitude <em>F</em> to give a net force of 0, so that by Newton's second law

<em>F</em> = 12 N

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Cuantos atomos de nitrogeno y oxigeno se necesitan para formar pentaoxido de dinitrogeno?​
zaharov [31]

Answer: 5 O2 + 2 N2⇒ 2 N2O5

Explanation:

6 0
3 years ago
The change of motion of a body is proportional to the applied force, and it takes place in the direction of a straight line in w
7nadin3 [17]

Answer:

Newton's Second Law of Motion  

Explanation:

According to Newton's second law of motion, the change in velocity of a body is directly proportional to the force applied on it. Velocity is a vector quantity. It measures the magnitude of the speed as well as its direction.

F = m a

where, F is the applied force, m is the mass and a is the acceleration.

It can also be expressed as:

F = \frac{dp}{dt}

where, p = mv ( momentum)

4 0
4 years ago
Read 2 more answers
A cup of mass 0.4 kg with its base radius of 4 cm is kept on a table. Calculate the pressure exerted by the cup on the table.​
madam [21]

Answer:

779.87 N/m²

Explanation:

Pressure = Force (F) / Area (A)

Recall :

Force = ma ; mass * acceleration due to gravity

a = 9.8 m/s² ; mass = 0.4kg

Force, F = 0.4 * 9.8 = 3.92 N

Area = πr² ; r = Radius = 4cm = 4 / 100 = 0.04 m

Area = π0.04² = 0.0050265 m²

Hence,

Pressure = 3.92 / 0.0050265

Pressure = 779.86670 N/m²

Pressure = 779.87 N/m²

5 0
4 years ago
A load of 800 N is lifted using a block and tackle having 5 pulleys. If the applied effort is 200 N, calculate
ser-zykov [4K]

Explanation:

Load=800N

Effort=200N

1. Mechanical Advantage = LOAD/EFFORT

= 800N/200N

= 4

2 Velocity Ratio = no. Of pulleys =5

3. Efficiency = Mechanical advantage / velocity ratio × 100%

= (4/5)×100%

=80%

4. output work= load×load distance

= 800N × 5m

= 4 × 1000J

5. Efficiency = (output work/input work) ×100%

Or, 80% = (4000J/input work) ×100%

Or, 80%/100% = 4000J/inputwork

Or, 4/5 = 4000J/inputwork

Or, input work =4000J × 5/4

Input work = 5×1000J

I hope it helped! ;-)

8 0
3 years ago
Read 2 more answers
The current through a 50ohm's resistance is 2A , how much power is dissipated as heat.<br>​
iris [78.8K]

Answer:

<u>Power</u><u> </u><u>is</u><u> </u><u>5</u><u>0</u><u>0</u><u>0</u><u> </u><u>W</u>

Explanation:

{ \bf{P=I {}^{2} R}}

<em>P</em><em> </em>is power

<em>I</em><em> </em>is current

<em>R</em><em> </em>is resistance

P=50 {}^{2}  \times 2 \\ P=5000{}^{}  \: watts

8 0
3 years ago
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