A superhero swings a magic hammer over her head in a horizontal plane. The end of the hammer moves around a circular path of rad

I disagree

Justification:

Fluorescent substances will emit light when exposed to ultraviolet light because the UV radiation excites their molecules.

Microwaves generate micro-waves from a different wavelength spectrum and will not excite the molecules to fluoresce

.

Since the motorcycle was at a speed of 36 m/s prior to braking, that marks the initial velocity.

The motorcycle skidded 23m before coming to a full stop, indicating that

As it has ceased motion, the final velocity is zero.


We can apply the 'suvat' formula relevant to linear motion.


Substituting the aforementioned values allows us to find,









We can apply the formula

to calculate the time required for the motorcycle to stop.

1. Initially removing a strip leaves some electrons behind, resulting in the strip becoming positively charged. 2. The roll itself does not acquire a negative charge since it is grounded by the hand holding it, causing excess negatives to repel through the hand. 3. Tearing off another strip again leaves electrons behind, this new strip is also positively charged and will repel the first strip. 4. When two strips are then pulled apart, one will transfer electrons to the other, creating one positively charged strip and one negatively charged strip, which will attract each other.

Response:11.5

Clarification:

Answer:

Explanation:

The atmospheric pressure is P = 10⁵ N/m²

The volume change is Δ V = 16 - 12 = 4 m³

Work done by the gas at constant pressure can be expressed as:

W = P Δ V

Substituting in values:

Work done = 10⁵ x 4

W = 4 x 10⁵ J.

Part B) The heat added is Q = 254 x 10³ cals

= 254 x 4.2 x 10³ J

= 10.66 x 10⁵ J

According to the first law of thermodynamics:

Q = Δ E + W

Where Q denotes heat energy added, Δ E represents the increase in internal energy, and W signifies the work performed by the gas.

Substituting the known values:

10.66 x 10⁵ = Δ E + 4 x 10⁵

Therefore, Δ E = 6.66 x 10⁵ J.