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3 years ago

Endothermic or exothermic

Physics

2 answers:

lbvjy [14]3 years ago

5 0

The first two are endothermic
the last two are exothermic

VashaNatasha [74]3 years ago

5 0

Endo - means to take in

Exo - means to get rid of or release

If heat is in the first part of the reaction, then it is Endothermic.
If the heat is in the second part of the reaction, it is Exothermic.

Hope this helps!

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Winds blowing toward the east are called easterlies. True or False

eimsori [14]

Answer: False

Explanation:

Winds are named for the cardinal direction they blow from. Hence, a wind that "blows towards the east", logically should come from the west and is called a "west wind".

In thise sense, one of the best examples of this type of wind are the Westerlies, which are are prevailing winds that blow from the west at midlatitudes and have the characteristic that are stronger during winter and weaker during summer.

Therefore, the statement is false.

6 0

3 years ago

A motor cycle travelling at 10 m/s accelerates at 4m/s for 8s. what is it final velocity?

Vlad1618 [11]

Initial velocity=u=10m/s
Acceleration=a=4m/s^2
Time=t=8s

Final velocity be v

$\\ \bull\tt\longmapsto v=u+at$

$\\ \bull\tt\longmapsto v=10+4(8)$

$\\ \bull\tt\longmapsto v=10+32$

$\\ \bull\tt\longmapsto v=42m/s$

4 0

3 years ago

Read 2 more answers

A steel beam that is 6.50 m long weighs 336 N. It rests on two supports, 3.00 m apart, with equal amounts of the beam extending

FinnZ [79.3K]

Answer:

Explanation:

When beam is balanced and not rotating with Suki standing on it , let reaction force on the supports be R₁ and R₂. Then

R₁ +R₂ = 336 + 590

= 929

Now the moment beam begins to tip , reaction on distant support R₁ = 0

only R₂ will exists on the support near to Suki.

Taking torque about this support of weight of beam acting from the middle point and weight of suki of 590N ,who is x distance from the support towards the other end.

336 x 1.5 = 590 x

x = .85 m

ie , from second support , Suki can not go beyond a distance of .85 m towards the second end.

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3 years ago

After the first solid grains formed in our solar system, these particles could then grow by the process of ____, the collision a

labwork [276]

Answer:

Accretion

Explanation:

Accretion is the process by which there is an accumulation of particles into a bigger object by attracting more mass by gravitational force into an accretion disk. This is one of the first steps in the formation of our solar system. There was a collapse of a gas cloud which resulted in most of the mass collecting in the center leading to the formation of the sun and the rest spread out forming the planets.

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4 years ago

a student standing between two walls shouts once.he hears the first echo after 3 seconds and the next after 5 seconds. calculate

Karolina [17]

Explanation:

It took $t_1 =1.5\:\text{s}$ for the sound to reach the 1st wall and at the same time time, the same sound took $t_2 = 2.5\:\text{s}$ to reach the 2nd wall. Assuming that the sound travels at 343 m/s, then let $x_1$ be the distance of the person to the 1st wall and $x_2$ be the distance to the 2nd wall. So the distance between the walls X is

$X = x_1 + x_2 = v_st_1 + v_st_2 = v_s(t_1 + t_2)$

$\:\:\:\:\:= (343\:\text{m/s})(4.0\:\text{s}) = 1372\:\text{m}$

6 0

3 years ago