A child runs at speed vc while an adult runs at speed va. if the adult gives the child a head start of distance d, how long will

Response:

65.14 g

Clarification:

The entropy change resulting from mixing two metals is

Here, R is the real gas constant, n_{cu} denotes the moles of copper, while n_{Ni} signifies the moles of nickel.

Therefore, determining the moles of Nickel yields

=1.7 moles

Then substituting n_{Ni} = 1.7 into the equation produces ΔS= 15,

with R= 8.314, and solving gives

Upon resolving, the quantity of moles of copper in the mixture equals

n_cu= 1.025

Thus, the copper mass is calculated as n_cu×M_cu = 1.025×63.55 = 65.14 g

Consequently, the required mass is found to be = 65.14 g

Answer:

The resistance of the skin is 98 kΩ

Explanation:

Given:

Resistivity Ωm

Thickness m

Resistivity of the skin:

With assumed radius for the worker's palm,

m

Area of the worker's palm,

Thus the resistance of palm is,

Ω

Consequently, the resistance of the skin is 98 kΩ

Answer:

Explanation:

It's provided that

Atmospheric pressure=0.67 atm

We need to determine the partial pressure of ozone at 441 ppb.

Partial pressure of ozone=

Inserting the given atmospheric pressure

Thus, we find

Partial pressure of ozone=

Consequently, the partial pressure of ozone is=