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DENIUS [597]
3 years ago
12

Which of the following is a strength training option?

Physics
2 answers:
Vilka [71]3 years ago
5 0

Answer:

D. All of the above

PLZ MARK ME AS BRAINLEIST ;)

polet [3.4K]3 years ago
3 0

Answer:

D All of the above

Explanation:

Check this site to understand why they all are strenght trainings. issaonline: weight machines vs free weights.

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The Hall effect can be used to calculate the charge-carrier number density in a conductor. If a conductor carrying a current of
goldfiish [28.3K]

Answer:

6.6*10^{27}e/m^3

Explanation:

When we are dealing with Hall voltage, it is necessary to have the values of the current, the magnetic field, the length, the area and the number of carriers at hand. The Hall voltage equation is given by,V_h = \frac{iB}{neL}

Where,

i= current

B= Magnetic field

L = Length

n = number of charge carriers

e= charge of a electron

We need replace and solve for n,

n= \frac{iB}{V_h e L}

n= \frac{2*1.2}{4.5*10^{-6}*5^10^{-3}*1.6*10^{-19}}

n= 6.6*10^{27}electron.m^{-3}

Therefore the density of charge carrier is 6.6*10^{27}e/m^3

5 0
4 years ago
Is prey abiotic or biotic?
Ray Of Light [21]
Biotic because of the prey of the reasoning
8 0
3 years ago
A 400 hp engine in a 1,600 kg car applies maximum force for 2 seconds to accelerate the car onto the
babymother [125]

Answer:

I will assume that “maximum force” implies the constant application of power  P  = 400 hp (international) to accelerating the vehicle. The force will therefore vary with speed as the vehicle accelerates. I will also assume that all engine energy goes into accelerating the vehicle, rather than rotating elements like its wheels.

In this case the 400 hp (equivalent to 298,280 watts) is applied for time  t  = 2 seconds. Therefore the kinetic energy of the vehicle is increased by:

ΔKE=Pt=(298,280)(2)=596,560  joules.

The initial kinetic energy is:

KEinitial=12mv2

=(0.5)(1600)(82)=51,200  joules.

Therefore final kinetic energy is:

KEfinal=KEinitial+ΔKE

=51,200+596,560

=647,760  joules

Therefore final vehicle velocity can be found:

KEfinal=12mv2

v=2KEfinalm−−−−−−−−√

=(2)(647,760)1600−−−−−−−−−−−√

= 28.455 m/s

Explanation:

4 0
3 years ago
The lithosphere consists of _______. select one:
Yanka [14]
The lithosphere is one of the four layers of the earth's interior. The lithosphere is the layer above the mantle of the earth and is the topmost part. Lithosphere includes a part of the mantle and the continental and oceanic crust. 
3 0
3 years ago
A non living factor in an ecosystem
I am Lyosha [343]

Answer:

Explanation:Abiotic is the answer.

8 0
3 years ago
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