Why physical constants matter in computation in SciPy - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the physical constants module from scipy.

SciPy

from scipy import [1]

Drag options to blanks, or click blank then click option'

Asignal

Bintegrate

Coptimize

Dconstants

Attempts:

3 left

💡 Hint

Common Mistakes

Importing unrelated scipy modules like integrate or optimize.

Trying to import constants as a submodule incorrectly.

The constants module in scipy provides access to physical constants used in scientific computations.

2fill in blank

medium

Complete the code to print the value of the speed of light constant.

SciPy

print(constants.[1])

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Aspeed_of_light

BPlanck

Celectron_mass

Dgravitational_constant

Attempts:

3 left

💡 Hint

Common Mistakes

Using Planck or electron_mass which are different constants.

Using incorrect attribute names.

speed_of_light is the attribute name for the speed of light constant in meters per second.

3fill in blank

hard

Fix the error in the code to correctly calculate energy using E=mc^2 with mass=2 kg.

SciPy

mass = 2
energy = mass * constants.[1] ** 2
print(energy)

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Aspeed_of_light

Bgravitational_constant

Celectron_mass

DPlanck

Attempts:

3 left

💡 Hint

Common Mistakes

Using Planck constant instead of speed of light.

Using gravitational_constant which is unrelated here.

The formula E=mc² uses the speed of light squared. Using speed_of_light from constants is correct.

4fill in blank

hard

Fill both blanks to create a dictionary of constants with their values for speed of light and Planck constant.

SciPy

phys_constants = {
    'speed_of_light': constants.[1],
    'Planck_constant': constants.[2]
}
print(phys_constants)

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Aspeed_of_light

BPlanck

Celectron_mass

Dgravitational_constant

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up constant names or using unrelated constants.

Using incorrect dictionary keys.

The dictionary keys map to the correct constants: speed_of_light and Planck from scipy.constants.

5fill in blank

hard

Fill in the blanks to compute the force using Newton's law: F = G * (m1 * m2) / r^2 with given values.

SciPy

m1 = 5.0
m2 = 10.0
r = 2.0
force = constants.[1] * (m1 * m2) / r[2] 2
print(force)  # Force in Newtons

# Use the correct operator and constant name

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Aspeed_of_light

B**

Cgravitational_constant

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using speed_of_light instead of gravitational_constant.

Using multiplication '*' instead of exponentiation '**' for squaring.

Newton's gravitational force formula uses the gravitational constant gravitational_constant and the exponent operator ** for squaring the distance.