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ANEK [815]
3 years ago
14

A cup of tea is mixutre true or false​

Physics
1 answer:
Hitman42 [59]3 years ago
6 0

Answer:

this is very true

Explanation:

I I should know I'm a tea fanatic

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Small pockets of synovial fluid that reduce friction and act as a shock absorber where ligaments and tendons rub against other t
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bursae.

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What is the equation for electric potential
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The unit of charge is the Coulomb (C), and the unit of electric potential is the Volt (V), which is equal to a Joule per Coulomb (J/C).

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3 years ago
The use of force to move an object is BLANK .
pashok25 [27]

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Work

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The use of force to move an object is the definition of "work" in physics.

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The electron beam inside a television picture tube is 0.40 {\rm mm} in diameter and carries a current of 50 {\rm \mu A}. This el
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Answer:

A.3.13x10^14 electrons

B.330A/m²

C.9.11x10^5N/C

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3 years ago
The Great Sandini is a 60 kg circus performer who is shotfrom a cannon (actually a spring gun). You don't find many men ofhis ca
d1i1m1o1n [39]

Answer:

V=15.3 m/s

Explanation:

To solve this problem, we have to use the energy conservation theorem:

U_e+K_i+U_{gi}+W_{friction}=K_f+U_{gf}

the elastic potencial energy is given by:

U_e=\frac{1}{2}*k*x^2\\U_e=\frac{1}{2}*1100N/m*(4m)^2\\U_e=8800J

The work is defined as:

W_{friction}=F_f*d*cos(\theta)\\W_{friction}=40N*2.5m*cos(180)\\W_{friction}=-100J

this work is negative because is opposite to the movement.

The gravitational potencial energy at 2.5 m aboves is given by:

U_{gf}=m*g*h\\U_{gf}=60kg*9.8*2.5\\U_{gf}=1470J

the gravitational potential energy at the ground and the kinetic energy at the begining are 0.

8800J+0+0+-100J=\frac{1}{2}*62kg*v^2+1470J\\v=\sqrt{\frac{2(8800J-100J-1470J)}{62kg}}\\v=15.3m/s

3 0
3 years ago
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