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77julia77 [94]
3 years ago
5

Which is a unique feature of Venus? A. Its surface is well below freezing. B. Its surface is hot enough to melt lead. C. It has

liquid water on the surface. D. It is heavily cratered.
Physics
2 answers:
Mkey [24]3 years ago
7 0
The correct answer is B. can you please help me answer my latest question too?
Sophie [7]3 years ago
6 0
It has a surface that is well below freezing.
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A 6000 kg roller coaster goes around a loop of radius 30 m at 6 m/s. What is the centripetal acceleration?
Margarita [4]

Answer:

The answer to the question is 7200

7 0
3 years ago
What is the average velocity if the initial velocity of an object is 10 m/s & the final velocity is 28 m/s
Likurg_2 [28]

Answer:

v_{1}  = 19 m/s

Explanation:

v_{1}  = \frac{(v_{2}  + u)}{2}, where v_1<em> </em>= avg. velocity, v_2 = final velocity, and u = initial velocity.

6 0
3 years ago
A gas bottle contains 7.86×10^23 Oxygen molecules at a temperature of 327.0 K.
castortr0y [4]

Answer:

1.  E=5320.3J

2. E= 1773.45J

3. E=6.76*10^{-21}J

4. E=2.25*10^{-21}J

Explanation:

1. the thermal energy is given by the formula

E_T=\frac{3}{2}NK_BT=\frac{3}{2}(7.86*10^{23})(1.38*10^{-23}\frac{J}{K})(327.0K)=5320.3J

where KB is the Boltzmann's constant, T is the temperature and N is the number of molecules in the system.

2. Each degree of freedom contains one half of the total energy. Hence, the energy for one degree of freedom is

E_1=\frac{1}{2}NK_BT=1773.45J

3.

E=\frac{3}{2}K_BT=6.76*10^{-21}J

4.

E=\frac{1}{2}K_BT=2.25*10^{-21}J

Hope this helps!!

6 0
3 years ago
Calculate the KE of a 3.1 kg toy cart that moves at 4.8 m/s. Calculate the KE of the same cart at twice the speed.
lisov135 [29]
When v= 4.8 m/s:

E.K=mv²/2
      =3,1(4.8)²/2
      =35.712J

when v= 2(4.8):

E.K=mv²/2
      =3.1(9.6)²/2
      =142.848J


4 0
4 years ago
Please help
cupoosta [38]
I definitely agree with choise that you consider to be as a correct one. I am pretty sure that prganism is correct because this is a unit which ebrases all the mentioned points. And in simple words, the rest of options represent collective objects but you have to answer with sole one. Hope you find it helpful.
8 0
4 years ago
Read 2 more answers
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