Astronomersestimatethata2.0-km-diameterasteroidcollides with the Earth once every million years. The collision could pose a thre
at to life on Earth. (a) Assume a spherical asteroid has a mass of 3200 kg for each cubic meter of volume and moves toward the Earth at 15 km????s. How much destructive energy could be released when it embeds itself in the Earth? (b) For comparison, a nuclear bomb could release about 4.0 * 1016 J. How many such bombs would have to explode
2 answers:
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The spring constant is 181.0 N/m
Explanation:
We can solve the problem by applying the law of conservation of energy. In fact, the elastic potential energy initially stored in the compressed spring is completely converted into gravitational potential energy of the dart when the dart is at its maximum height. Therefore, we can write:
where the term on the left represents the elastic potential energy of the spring while the term on the right is the gravitational potential energy of the dart at maximum height, and where
k is the spring constant of the spring
x = 2.08 cm = 0.0208 m is the compression of the spring
m = 12.3 g = 0.00123 kg is the mass of the dart
is the acceleration due to gravity
h = 3.25 m is the maximum height of the dart
Solving for k, we find:
Learn more about potential energy:
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Answer:
Eo = 9.796 x 10^2 N/C
Bo = 3.266 x 10^-6 T
Explanation:
Given
Wavelength λ = 633 nm
Diameter of the beam D = 1.0 mm
Power P = 1.0 mW
Solution
Radius of the beam r = D/2 = 0.5 mm = 0.0005 m
Area of cross section
Intensity
Amplitude of Electric Field
Amplitude of Magnetic Field