Question:<em> </em><em>Find, separately, them mass of the balloon and the basket (incidentally, most of the balloon's mass is air)</em>
Answer:
The mass of the balloon is 2295 kg, and the mass of the basket is 301 kg.
Explanation:
Let us call the mass of the balloon  and the mass of the basket
 and the mass of the basket  , then according to newton's second law:
, then according to newton's second law: 
 ,
,
where  is the upward acceleration, and
 is the upward acceleration, and  is the net propelling force (counts the gravitational force).
 is the net propelling force (counts the gravitational force).
Also, the tension  in the rope is 79.8 N more than the basket's weight; therefore,
 in the rope is 79.8 N more than the basket's weight; therefore, 

and this tension must equal 


Combining equations (2) and (3) we get: 

since  , we have
, we have 

Putting this into equation (1) and substituting the numerical values of  and
 and  , we get:
, we get: 


Thus, the mass of the balloon and the basket is  2295 kg and 301 kg respectively.
 
        
             
        
        
        
Hello!

Use the formula for kinetic energy:

Plug in the given mass and velocity:

Simplify:

 
        
             
        
        
        
Answer:
   Dr = 263 10⁻⁶ m
Explanation:
The diffraction pattern for constructive interference is described by
         a sin θ = m λ
in this it indicates that the order of diffraction is m = 1
Let's use a direct proportion rule to find the separation of two slits. If there are 600 lines in 1 me, what is the distance between 2 slits
    a = 2 lines 1/600
    a = 2/600
     a = 3.33 10⁻³ mm = 3.33 10⁻⁴ cm
let's use trigonometry
       tan θ = y / L
as the measured angles are small
       tan θ = sin θ / cos θ sin θ
       sin θ = y / L
we substitute
      a  y/L = λ
      y = λ L / a
for λ = 400 10-9 m
       I = 400 10⁻⁹ 2.9 / 3.33 10⁻³
       i = 346.89 10⁻⁶ m
f
or λ = 700 nm
         y_f = 700 10⁻⁻⁹ 2.9 / 3.33 10⁻³
         y_f = 609.609 10⁻⁶ m
the separation of this spectrum
         Δr = v_f - i
         Dr = (609.609 - 346)  10 ⁻⁶
         Dr = 263 10⁻⁶ m
 
        
             
        
        
        
Answer: m= 2.16 kg
Explanation: Momentum is expressed in the following formula:
p = mv
Derive to find m:
m = p / v
 = 4.75 kg.m/s / 2.2 m/s
 = 2.16 kg
Cancel out m/s and the remaining unit is in kg.
 
        
                    
             
        
        
        
It contains no large maria