Please answer this question.

Tammy leaves the office, drives 34 km due north, then turns onto a second highway and continues in a direction of 35◦ north of e

Natasha2012 [34]

Answer:

The total displacement is 102 km $51^o$ north of east.

Explanation:

We can treat this problem as a trigonometric one, so we need to calculate the total displacement on the north and east.

$d_n=34km+79km*sin(35^o)=79km$

and

$d_e=79*cos(35^o)=65km$

The total displacement is given by:

$D=\sqrt{(79km)^2+(65km)^2}=102km$

with an agle of:

$\alpha =arctg(\frac{79km}{65km})=51^o$

4 0

3 years ago

Light hitting a rough surface would most likely:

ololo11 [35]

When light hits a rough surface it is most likely to reflect because when light hits an object it reflects in lots of different directions and that happens when the surface is rough

3 0

3 years ago

A cylinder contains a mixture of helium and argon gas in equilibrium at 160°C.

Artist 52 [7]

Answer:

a. E=8.97*10^{-21} J

b. v-He2 = 1.161 km/s

v-Ar2 = 369.74 m/s

Explanation:

(a) The average kinetic energy is given by

$E_k=\frac{1}{2}k_BT$

where KB is the Boltzman's constant and T is the temperature. For each molecule we have:

$E_k=\frac{3}{2}(1.38066*10^{-23}\frac{J}{K})(433.15K)=8.97*10^{-21}J$

is the same for both type of molecules because is independent of the mass

(b)

$v_{rms}=\sqrt{\frac{3RT}{M}}$

where R is the constant of ideal gases, and M is the mass of the molecule. BY replacing for each type of molecule we obtain:

$v_{rms-He_{2}}=\sqrt{\frac{3(8.311434Jmol^{-1}K^{-1})(433.15K)}{0.008kg\ mol^{-1}}}=1161.9\frac{m}{s}\\\\v_{rms-Ar_{2}}=\sqrt{\frac{3(8.311434Jmol^{-1}K^{-1})(433.15K)}{0.079kg\ mol^{-1}}}=369.74\frac{m}{s}$

v-He2 = 1.161 km/s

v-Ar2 = 369.74 m/s

hope this helps!!

8 0

3 years ago

Can a solution be separated by filtration?

alexgriva [62]

Answer:

Filtration is a method for separating an insoluble solid from a liquid. When a mixture of sand and water is filtered: the sand stays behind in the filter paper (it becomes the residue ) the water passes through the filter paper (it becomes the filtrate )

Explanation:

Listo!

8 0

3 years ago

Read 2 more answers

I really need help !!

Marat540 [252]

Answer:

The generator will work only if the magnetic field associated with the turns of coil change.

here both magnet and coil are stationary with respect to each other so no electromagnetic induction would take place. so no indiced current will be produced.

the student has to introduce some mechanism either to rotate the coil or the magnet

5 0

4 years ago