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-Dominant- [34]
3 years ago
14

Why trucks are made to have many tires?​

Physics
1 answer:
dsp733 years ago
5 0

Answer: Load carrying heavy vehicles have large number of wheels in order to reduce pressure on the contact patch on road. With large number of wheels, it becomes easy to distribute the entire pressure of loads in an even manner.

Explanation:

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17. In which layer does mantle convection occur?
Anarel [89]

Answer:

D. Asthenosphere

Explanation:

The asthenosphere is relatively plastic part of the mantle which underlies the brittle lithosphere. In the asthenosphere, it is generally believed that the rocks are in ductile state and easily moves. It is the site of convection within the earth. In mantle convection, hot and light materials rises and keeps moving into upper crustal levels till they solidify. Here also, cold and denser materials sinks deeper till they turn to melt. This differences in temperature and density sets up a convective cell within the mantle. Several convective cells are in the mantle.

8 0
3 years ago
In the decreasing order of magnitude, which of the following is correct?
Sergio [31]

Answer:

b. Static > sliding > rolling friction.

Explanation:

Static friction is greater than sliding friction.  It takes more force to get an object to start sliding than to keep it sliding.

Sliding friction is greater than rolling friction.  There are fewer points of contact for a round surface compared to a flat one.

5 0
3 years ago
The number one is never written in the formulas for chemical compounds
Bess [88]

Here is your ans

Explanation:

The formula of compound such as CH4

Indicates the types of atoms present with subscripts representing the relative numbers of answers

Tq

3 0
3 years ago
A car approaching a stationary observer emits 450. hz from its horn. if the observer detects a frequency pf 470. hz, how fast is
Irina-Kira [14]
The relationship between the frequency heard by the observer in motion and the original frequency of the sound is given by (Doppler effect)
f'= \frac{v}{v-v_s}f
where
f' is the frequency heard by the observer
v is the speed of the wave (the speed of sound)
v_s is the speed of the source relative to the observer (= the speed of the car), and it is negative when the source is approaching the observer
f is the original frequency of the sound

By re-arranging the formula, we get
v_s=v( 1- \frac{f'}{f})
and by plugging the data of the problem into the equation, we find
v_s = (343 m/s)( 1- \frac{470 Hz}{450 Hz})=-15.2 m/s
so, the car is approaching the observer at 15.2 m/s.
8 0
3 years ago
Description Of your Alien
tia_tia [17]

Answer:

Green, tall, weird language, maybe has only one eye or more, has an egg-shaped spaceship.

6 0
3 years ago
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