All categories

3 years ago

Why are temperatures higher in the summer

2 answers:

5 0

Because when daily temperatures average higher, we call that season "Summer", and we say to each other "Hey hello there ! Summer is finally here !"

pochemuha3 years ago

4 0

Answer:Why are temperatures higher in summer than in winter?

During the summer, the sun's rays hit the Earth at a steep angle. ... Also, the long daylight hours allow the Earth plenty of time to reach warm temperatures. During the winter, the sun's rays hit the Earth at a shallow angle. These rays are more spread out, which minimizes the amount of energy that hits any given spot.

You might be interested in

What does it mean standard unit?

Goshia [24]

Answer:

<h3>Standard unit is a standard measure that remains the same whenever, wherever and by whoever it is used. eg: The standard unit of time is second.</h3>

7 0

3 years ago

If two charged objects in a laboratory are brought to a distance of 0.22 meters away from each other. What is

zysi [14]

Answer:

$q_2=2.47\times 10^{-4}\ C$

Explanation:

The charge on one object, $q_1=9.9\times 10^{-5}\ C$

The distance between the charges, r = 0.22 m

The force between the charges, F = 4,550 N

Let q₂ is the charge on the other sphere. The electrostatic force between two charges is given by the formula as follows :

$F=\dfrac{kq_1q_2}{r^2}\\\\q_2=\dfrac{Fr^2}{kq_1}\\\\q_2=\dfrac{4550\times (0.22) ^2}{9\times 10^9\times 9.9\times 10^{-5}}\\\\q_2=2.47\times 10^{-4}\ C$

So, the charge on the other sphere is $2.47\times 10^{-4}\ C$ .

7 0

3 years ago

1. If a car travels East 60 km for 4 hours. What was the velocity of the car?

True [87]

Answer:

15km/h East (15m/s East option)

Explanation:

Velocity = (change in) Distance/(change in) Time

The distance here is 60km, and the time is 4h, as given by the question. Therefore the velocity is 60km/4h = 15km/h.

To convert km/h to m/s, we just divide the value by 3.6, 15/3.6= 4.17m/s (2dp), which isn't actually an option here, so I'm assuming maybe a mistake in unit for the question?

'Velocity' is a vector quantity, meaning it has a size<em> </em>and a direction, as opposed to speed, a scalar quantity, which only has size. Therefore we need to add a direction for it to be velocity. The given direction here is east, so the velocity of the car is 15km/h East. (I would choose the 15m/s East as the question likely has a unit error and is closest.)

Hope this helped!

4 0

3 years ago

What causes comets to move through the solar system?.

Mrrafil [7]

I study in astronymy in College I had a question like this.

Long-period comets are set in motion towards the Sun from the Oort cloud by gravitational perturbations caused by passing stars and the galactic tide. Hyperbolic comets may pass once through the inner Solar System before being flung to interstellar space. The appearance of a comet is called an apparition.

7 0

3 years ago

A battery of internal resistance 1 Ω and emf of 12 volt connected to external resistance of 79 Ω.Calculate the power delivered b

Masteriza [31]

Answer:

Explanation:

<u>Electromotive Force (EMF)</u>

It consists of a DC source ε with small internal resistance Ri. When it's connected to an external resistance Re a current i flows by the circuit whose value is given by:

$\displaystyle i =\frac{\varepsilon }{R_i+R_e}$

The internal resistance of the battery is Ri=1 ohm and its emf is ε=12 V. When connected to an external resistance of Re=79 ohm, the current is:

$\displaystyle i =\frac{12}{1+79}=\frac{12}{80}$

i = 0.15 A

The power delivered by the battery is:

P = ε.i

P = 12 V * 0.15 A

P = 1.8 Watt

4 0

3 years ago