Answer: equal in magnitude but opposite in direction to the force that it exerts.
Explanation:
A nitrogen laser generates a pulse containing 10.0 mj of energy at a wavelength of 340.0 nm and has 1785 x 10¹⁹ photons in the pulse.
<h3>How many photons are in the pulse?</h3>
Energy of a single photon is
E=hcλ
E=6.626×10⁻³⁴ J s×3×108 m/s /340×10⁻⁹ m
E=6.31×10⁻¹⁹ J
Number of photons in the laser is
n=Total Energy/Energy per photon
n=10⁷×10⁻³J /5.90×10⁻¹⁹J/photon
n= 1785 x 10¹⁹ photons
To learn about photons, refer: brainly.com/question/20912241?referrer=searchResults
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Answer:
122444 Kg
Explanation:
Using the formula for gravitational force;
F= Gm1m2/r^2
Given that
G = constant of gravitation = 6.67 × 10−11 newton-metre2-kilogram−2.
m1 and m2 = the masses
r= distance of separation
Note that the question specifically mentioned that the masses are identical
so m1=m2 = m^2
F= Gm^2/r^2
Fr^2 = Gm^2
m^2 = Fr^2/G
m^2 = 1 × 1^2/6.67 × 10−11:
m =√ 6.67 × 10−11
m= 122444 Kg
Answer:
7 m/s²
Explanation:
The formula for force is:
We want to find acceleration, so we must rearrange the formula for . Divide both sides of the equation by
Acceleration can be found by dividing the force by the mass.
The force is 42 newtons and the mass is 6 kilograms. A newton is equal to 1 kg * m/s², therefore the force is 42 kg* m/s².
Substitute the values into the formula.
Divide. When we divide, the kg in the numerator and denominator will cancel each other out.
The acceleration of the object is 7 meters per square seconds.
Answer:
Explanation:
Initial magnetic flux = magnetic field x area
= 4.4 x 5 x 10⁻³
= 22 x 10⁻³ weber
Final magnetic flux
= 1.32 x 5 x 10⁻³
= 6.6x 10⁻³ weber
change in magnetic flux = 15.4 x 10⁻³
emf induced = change in flux / time
= 15.4 x 10⁻³ / 22 x 10⁻³
= .7 V
current in bracelet = emf / resistance
= .7 / .02
= 35 A
b )
power = volt induced x current
= .7 x 35
= 24.5 W .