Find the speed of sound in air that is 30.0°C.
350
314
18
Answers
Answer:
v = 350 m/s
Explanation:
The speed of sound depends on the temperature of surrounding. The relation between the speed of sound and the temperature is given by :
Where, T is temperature in Celsius
Here, T = 30 degree Celsius
v = 349.3 m/s
or
v = 350 m/s
Therefore, the speed of sound in air at 30 degrees Celsius is 350 m/s.
Answer:
the answer is 350 m/s
Explanation:
Related Questions
When an object is at a distance of twice the focal length from a concave lens, the image produced is virtual and smaller than the object. What happens to the image if the object is shifted closer to the lens to a point one focal length away from it?The image produced is virtual and enlarged.The image produced is virtual and smaller than the object.The image produced is real and enlarged.The image produced is real and smaller than the object.The image produced is virtual and of the same size as the object.
If you have a mass of 55 kg and you are standing 3 meters away from your car, which has a mass of 1233 kg, how strong is the force of gravity between you and the car ?
A piston above liquid in a closed container has an area of 1m2. The piston carries a load of 350 kg. What will be the external pressure on the upper surface of the liquid in KPA
A 50 kg ball rolls down the street at 5 m/s.Calculate the momentum of the ball.
GCF for the polynomial
Answers
Answer:
Explanation:
The GCF is the greatest common factor of the polynomial.
The greatest common factor is 2.
Answers
The correct statement is: An atomic nucleus contains most of the atom’s mass.
All of the atom's neutrons and protons are in the nucleus, and the atom's electrons are outside the nucleus.
It would take more than 1,800 electrons to add up to the mass of one neutron or one proton.
But no atom has more than around 240 electrons, so we can see that almost all of the atom's mass is in the nucleus.
Final answer:
The atomic nucleus is best described as containing most of the atom's mass due to the presence of protons and neutrons, not as being negatively charged or mostly empty space.
Explanation:
The correct statement that describes an atomic nucleus is that an atomic nucleus contains most of the atom’s mass. This is due to the presence of protons and neutrons in the nucleus which carry nearly all the mass of the atom. The nucleus is not negatively charged, it carries a positive electric charge because of the protons. It is also not correct to say that it's mostly empty space as this describes the whole atom's structure where most of the space is taken up by electrons circling the nucleus.
Learn more about Atomic Nucleus here:
#SPJ3
both took 4 hours to complete their walk. Their routes are shown.
Route in miles
D2 E
End
B2C
li
F
2
LL
3
10
Start
G
A
Which statement is true about Debby and Ben's average speed?
Debby's average speed was twice Ben's average speed,
Ben and Debby's average speed was the same,
Debby's average speed was three times Ben's average speed,
Ben's average speed was twice Debby's average speed.
Answers
A. 5,362.56 N
B. 7,600.18 N
C. 6,700.56 N
D. 6,150.64 N
Answers
(0.08 m³) x (7,840 kg/m³) = 627.2 kg.
The force of gravity on the block is
(mass) x (gravity)
= (627.2 kg) x (9.8 m/s²)
= 6,146.6 newtons .
As long as the block is on Earth, that's its weight. In vacuum, in air,
in water, in sugar, in bed, in trouble, or in molasses ... that's the force
of gravity attracting it toward the center of the Earth.
If it happens to be in water, then there's another force acting on it ...
the upward force of buoyancy, equal to the weight of the water it
displaced.
The block displaced 0.08 m³ of water, so the buoyant force is the weight
of 0.08 m³ of water.
The density of water is 1,000 kg/m³, so the mass of the displaced
water is
(0.08 m³) x (1,000 kg/m³) = 80 kg .
and its weight is (80 kg) x (9.8 m/s²) = 784 newtons.
That's the buoyant force on the block . . . 784 newtons.
It acts upward on the block, opposite to the force of gravity.
So, if there's a bathroom scale on the bottom of the pool,
and the block is resting on it, the scale will read
(actual weight) minus (buoyant force)
= (6,146.6 newtons) - (784 newtons) = 5,362.6 newtons .
The real weight of the block is 6146.6 newtons.
That's choice-D.
The apparent weight of the block in water is 5,362.6 newtons.
That's choice-A.
The question asked for the force of gravity on the block, and then
in parentheses it says (weight). Both of these are 6146.6 newtons.
If you answer 'D', and your answer is marked wrong and somebody
tries to tell you that the correct answer is 'A', then I want you to either
show them what I have written here, or else tell them to come see me,
and I will straighten them out.
Answer:The answer for PF students is D.
Explanation:
Answers
At that location . . .
-- The horizontal components of the field are in opposite directions, so cancel.
-- The vertical components are in the same direction ... downward ... so add.
The direction of the net E-field at the point (0.5, 0.5) is downward,
toward the point (0.5, 0) .