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yaroslaw [1]
4 years ago
5

An athlete needs to lose weight and decides to do it by “pumping iron.” (a) How many times must an 90.0 kg weight be lifted a di

stance of 0.890 m in order to burn off 1.00 lb of fat, assuming that that much fat is equivalent to 3500 kcal? (b) If the weight is lifted once every 2.10 s, how long does the task take?
Physics
1 answer:
Wittaler [7]4 years ago
7 0

Answer:

230kg would be the best answer

Explanation:

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Which following options are examples of matter? A) light B) Molecules C) Feelings D) people
yaroslaw [1]
All except C, feelings are not physical.
6 0
4 years ago
Read 2 more answers
If a proton and an electron are released when they are 6.50×10⁻¹⁰ m apart (typical atomic distances), find the initial accelerat
Cerrena [4.2K]

Answer:

(a) Acceleration of electron= 5.993×10²⁰ m/s²

(b) Acceleration of proton= 3.264×10¹⁷ m/s²

Explanation:

Given Data

distance r= 6.50×10⁻¹⁰ m

Mass of electron Me=9.109×10⁻³¹ kg

Mass of proton Mp=1.673×10⁻²⁷ kg

Charge of electron qe= -e = -1.602×10⁻¹⁹C

Charge of electron qp= e = 1.602×10⁻¹⁹C

To find

(a) Acceleration of electron

(b) Acceleration of proton

Solution

Since the charges are opposite the Coulomb Force is attractive

So

F=\frac{1}{4(\pi)Eo }\frac{|qp*qe|}{r^{2} }\\   F=(8.988*10^{9}Nm^{2}/C^{2})*\frac{(1.602*10^{-19})^{2}  }{(6.50*10^{-10} )^{2}  } \\F=5.46*10^{-10}N

From Newtons Second Law of motion

F=ma

a=F/m

For (a) Acceleration of electron

a=F/Me\\a=(5.46*10^{-10} )/9.109*10^{-31}\\ a=5.993*10^{20}m/s^{2}

For(b) Acceleration of proton

a=F/Mp\\a=(5.46*10^{-10} )/1.673*10^{-27} \\a=3.264*10^{17}m/s^{2}

3 0
3 years ago
Please help answer #14!!!!!!!
jeka94

When a heavy football player and a light one run into each other, does the lighter player really exert as much force on the heavy player s the heavy player exerts on the light one. Yes. The interaction between the two players, the force each exerts on the other have equal strength.

Hope this helps you!!!

Please mark this as the brainliest one!!!

7 0
3 years ago
Lenz’s law states that an induced magnetic field in a conductorA. Opposes the change in flux through the conductor.B. Opposes th
Paha777 [63]

Answer:

D. Opposes the applied flux through the conductor.

Explanation:

  • <em><u>According to the Lenz's law, the direction of induced e.m.f is such that it generates a current which in turn produces a magnetic field that would oppose the change causing it.</u></em>
  • In other words, the direction of any magnetic induction effect is such that it opposes the cause of the effect.
  • Therefore; an induced magnetic field in a conductor, opposes the applied flux through the conductor.
7 0
3 years ago
Read 2 more answers
Gravitational potential energy depends on the ____________ of the object.
arlik [135]

Answer:

Height And Mass!

Explanation:

Got It from Google! I ain't smart XDD

4 0
3 years ago
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