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Ahat [919]
3 years ago
12

An atom of calcium-48 and an atom of calcium-47 differ in

Physics
2 answers:
Harrizon [31]3 years ago
4 0

The number of neutrons.


anygoal [31]3 years ago
3 0
The 48 and 47 are different atomic masses, this is caused by having a different number of neutrons.
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You are walking in the forest and see a bear. According to the Cannon-Bard theory, what happens next?
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If Superman really had x-ray vision at 0.12 nm wavelength and a 4.1 mm pupil diameter, at what maximum altitude could he disting
iVinArrow [24]

Answer:

Maximum altitude to see(L) =  1.47 × 10⁶ m (Approx)

Explanation:

Given:

wavelength (λ) = 0.12 nm = 0.12 × 10⁻⁹ m

Pupil Diameter (d) = 4.1 mm = 4 × 10⁻³ m

Separation distance (D) = 5.4 cm = 0.054 m

Find:

Maximum altitude to see(L)

Computation:

Resolving power = 1.22(λ / d)

D / L = 1.22(λ / d)

0.054 / L = 1.22 [(0.12 × 10⁻⁹) / (4 × 10⁻³ m)]

0.054 / L = 1.22 [0.03 × 10⁻⁶]

L = 0.054 / 1.22 [0.03 × 10⁻⁶]

L = 0.054 / [0.0366 × 10⁻⁶]

L = 1.47 × 10⁶

Maximum altitude to see(L) =  1.47 × 10⁶ m (Approx)

8 0
3 years ago
Which of the following is true about the speed of light?
strojnjashka [21]

Answer:

it is a constant value that does not depend on the observer

Explanation:

8 0
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I need help please and thanks
SCORPION-xisa [38]

Answer:

4.Given:

m=1000kg

a=(3m/s)^2

F=m×a

=1000×3

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5.Given:

m=50kg

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F=m×a

=50×5

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6. Given

F=250N

a=(5m/s)^2

m=?

F=m×a

250N=m×(5m/s)^2

m×(5m/s)^2=250N

m=250N÷(5m/s)^2

m=50kg

8 0
3 years ago
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