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Aleks [24]
3 years ago
12

Find the net force exerted on a 0.15-kg ball that has an acceleration of 20 m/s2.

Physics
2 answers:
zubka84 [21]3 years ago
8 0
M=0.15kg
a=20m/s

F=ma —> F= 0.15x20
F=3N
lapo4ka [179]3 years ago
5 0
An example of a law being implemented by bureaucratic agency is____
A. Congress passing legislation by major vote
B. OSHA deciding how hazardous substance should be stored
C. the USPS delivering mail throughout the country
D. A watchdog group blowing the whistle on government corruption
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A curent-carrying 2.0-cm long segment of wire is inside a long solenoid adius - 40 cm - 800 turns/m, current - 50 mA). The wire
klasskru [66]

Answer:

The value is  F_{max}  = 12 \muN

Explanation:

From the question we are told that

   The  length is  l = 2.0 \  cm  =  0.02 \  m

     The radius of the the solenoid is r =40 \ cm

     The number of turns per meter is  N  =  800 \  turns / m

     The current through the solenoid  is  I  =  50 \  mA  =  50*10^{-3} \  A

      The  current through the segment is  I_s  =  12 \  A

   Generally the magnetic force is mathematically  represented as

    F  = B  *  I_s l sin(\theta)

At maximum \theta =  90^o

So  

   F_{max}  = B  *  I_s l

Here B is the magnetic field is mathematically represented as  

      B  =  \mu_o  * N  * I

Here  \mu_o is the permeability of free space with value

    \mu_o  =   4\pi * 10^{-7} N/A^2

So  

      B  =    4\pi * 10^{-7}  * 800  *50*10^{-3}

=>    B  =   5.0272 *10^{-5}   \  T

So

     F_{max}  =  5.0272 *10^{-5}  * 12 *  0.02

    F_{max}  = 1.2 *10^{-5}

      F_{max}  = 12 \muN

 

4 0
3 years ago
Calculate the volume that 42g of nitrogen gas (N2)occupies at standard temperature and pressure.​
luda_lava [24]

Nitrogen gas has a molar mass of about 28.0134 g/mol. Then we have a starting amount of

(42 g) / (28.0134 g/mol) ≈ 1.4993 mol

of N₂.

At standard temperature and pressure, one mole of an ideal gas occupies a volume of about 22.4 L. Then 42 g, or 1.4993 mol, of N₂ takes up

(1.4993 mol) × (22.4 L/mol) ≈ 33.6 L

8 0
3 years ago
Describe the changes that occur inside a helium balloon as it rises from sea level
zheka24 [161]

Answer:

The balloon expands in the number of particles per cubic centimeter decreases. This happens because as it expands there is a decrease in the density of area. The Dead Sea is a solution that is so dense that you easily float on it.

8 0
3 years ago
What is the tendency of a material to oppose the flow of charge?
elena55 [62]

I think the answer is Resistance.  If the link i posted int he comment is right.

8 0
4 years ago
If a particle undergoes shm with amplitude 0.21 m, what is the total distance it travels in one period?
Ymorist [56]
If a particle undergoes simple harmonic motion with an amplitude of 0.21 meters, this means that the maximum displacement of the particle from its resting position is 0.21. For one period, it traveled from its starting position which is twice the amplitude and then back to its original position which is another distance that is twice the amplitude as well. Therefore, the total distance it traveled is 2*amplitude + 2*amplitude = 2*0.21 + 2*0.21 = 0.42 + 0.42 = 0.84 meters.
7 0
4 years ago
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