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3 years ago

12

Because of a higher moisture content, air is better conductor of charge in the summer than in the winter. Would you expect the s

hocks from static electricity to be more severe in summer or in winter

1 answer:

Makovka662 [10]3 years ago

8 0

Answer:

Explanation:

It will be more severe during Winter compared to summer because more charges can be accumulated before electric discharge takes place.

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A horizontal circular curve on a highway is designed for traffic moving at 60 km/h. If the radius of the curve is 150 m, and if

KengaRu [80]

Answer:

The value of the correct angle of banking for the road is $\theta = 67.76$ °

Explanation:

Given data

Velocity (v) = 60 $\frac{m}{s}$

Radius = 150 m

The velocity of the car in this case is given by

$v = \sqrt{r g \tan \theta}$

$v^{2} = r g \tan \theta$

$\tan \theta = \frac{v^{2} }{rg}$

Put all the values in above formula we get

$\tan \theta = \frac{60^{2} }{(150)(9.81)}$

$\tan \theta =$ 2.446

$\theta = 67.76$ °

Therefore the value of the correct angle of banking for the road is $\theta = 67.76$ °

4 0

3 years ago

What is the charge on a hypothetical ion with 35 protons and 37 electrons?

irinina [24]

Charge= Protons- electrons
Charge= 35p-37e= -2

This Ion will have a charge of -2<span>. </span>

5 0

3 years ago

A race car accelerates on a straight road from rest to speed of 180 km/hr in 25s . Assuming uniform acceleration of the car thro

adelina 88 [10]

X-x0=0.5(v0+v)t ergo x=0.5(50)25=625m

3 0

3 years ago

A 5-kg ball collides inelastically head-on with a 10-kg ball, which is initially stationary. Which of the following statements i

NARA [144]

Answer:

The magnitude of the change of velocity the 5-kg ball experiences is less than that of the 10-kg ball.

Explanation:

In inelastic collision, the total momentum is always conserved after collision but the kinetic energy is reduced.

Momentum is Mass X velocity.

5 kg ball is in motion, while 10 kg ball is stationary; that is zero velocity.

The momentum of 10 kg ball before collision is zero while the momentum of 5 kg ball before collision is more than zero. Therefore, the magnitude of change in momentum will not be equal.

Next possible options are in kinetic Energy

Initial Kinetic energy = $\frac{1}{2}mu^2$

Final kinetic energy = $\frac{1}{2}mv^2$

Change in kinetic energy = Final Kinetic Energy - Initial Kinetic Energy

Change in kinetic energy of 5kg ball = $\frac{1}{2}mv^2 -\frac{1}{2}mu^2 = \frac{1}{2}m(v-u)^2$

Since the 5-kg ball has initial velocity (u), the magnitude of the change in velocity will be reduced.

Change in kinetic energy of 10kg ball:

the ball is initially at rest, therefore the initial velocity (u) will be zero (0)

Δ K.E = $\frac{1}{2}mv^2 -\frac{1}{2}mu^2 = \frac{1}{2}m(v-u)^2 = \frac{1}{2}m(v-0)^2 = \frac{1}{2}mv^2$

From the solution above, the magnitude of the change in velocity experienced by 10 kg ball is higher than 5 kg ball.

Hence, The magnitude of the change of velocity the 5-kg ball experiences is less than that of the 10-kg ball

4 0

3 years ago

Make a list of five materials or substances you use every day that are made from organic compounds. Write a minimum of one parag

Vaselesa [24]

1.)Baking powder NaHCO3; sodium bicarbonate Used for baking for cooking, releases CO2 in reaction with other ingredients.

2.)Detergent Sodium sulphate, sodium hydroxide and phosphatecompounds Used for washing clothes.

3.)Toothpaste Calciuym carbonate, sodium flouride Used for cleaning teeth.

4.)Salt NaCl; Sodium Chloride Used in seasoning for cooking; also used as preservative.

5.)Vinegar C2H4O2

acetic acid, ethanoic acid

Used as preservative and for seasoning foods. Utilized for various household cleaning uses.

6 0

3 years ago