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Bad White [126]
3 years ago
5

A backpack weighs 8.2 newtons and has a mass of 5 kg on tje mion whatt is the strength of gravity on the moon

Physics
1 answer:
Inessa [10]3 years ago
5 0

                                     Weight  =  (mass)  x  (local gravity)

                                        8.2 N  =  (5 kg)  x  ( g )

Divide each side  
by  5 kg :                  8.2 N / 5 kg  =                 g

                               g  =  (8.5 kg-m/s²)  /  (5 kg)

                                   =    (8.5 / 5)    m/s²

                                   =      1.7 m/s²  .
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At sunrise two old women started to walk towards each other. one started from point a and went towards point b while the other s
konstantin123 [22]

Let the distance between points a and b = d

For the women starting from a her velocity be V_1 and for the women starting from b her velocity be V_2

Let the rising time of sun = x AM

We have  V_1 = \frac{d}{12+4-x}

and we also have  V_2 = \frac{d}{12+9-x}

At they meet means, they both travel a combined distance of d

So we have   V_1*(12-x)+V_2*(12-x)=d

Substituting velocity values we will get

  \frac{d}{12+4-x}*(12-x)+\frac{d}{12+9-x}*(12-x)=d\\ \\ \frac{12-x}{12+4-x}+\frac{12-x}{12+9-x}=1\\ \\ \frac{12-x}{16-x}+\frac{12-x}{21-x}=1\\ \\ 252-21x-12x+x^2+192-12x-16x+x^2=336-16x-21x+x^2\\ \\ x^2-24x+108=0\\ \\ (x-6)(x-18)=0\\ \\

 x= 6 AM or 18 AM, but 18 AM is not possible,

Sun rise time is 6 AM


3 0
3 years ago
a lead block drops its temperature by 5.90 degrees celsius when 427 J of heat are removed from it. what is the mass of the block
Airida [17]

Answer:

577g

Explanation:

Given parameters:

Temperature change = 5.9°C

Amount of heat lost = 427J

Unknown:

Mass of the block = ?

Solution:

The heat capacity of a body is the amount of heat required to change the temperature of that body by 1°C.

                H =  m c Ф

  H is the heat capacity

 m  is the mass of the block

  c is the specific heat capacity

   Ф is the temperature change

Specific heat capacity of lead is 0.126J/g°C

   m = H / m Ф

   m = \frac{427}{0.126 x 5.9}  = 577g

Mass of the lead block is 577g

7 0
3 years ago
Use hubble's law to determine the distance to a galaxy which is moving away at a velocity of 3,500 km/s. (assume that h = 70 km/
lorasvet [3.4K]
The solution for this problem:
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3 years ago
True or false: Everything in the universe works with harmony because of balanced energy
Eduardwww [97]

Answer:

Explanation:

True

7 0
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Which of the following statements about Masters programs is not correct?
uranmaximum [27]

The correct answer is C. The level of competition is not very high in most Masters  programs.

Explanation:

In sports, the word "master" is used to define athletes older than 30 and that usually are professional or have trained for many years, although novates are also allowed. This means in most cases in Master programs and teams a high level of competition can be expected due to the experience and extensive training of Master athletes. Indeed, many records in the field of sport belong to Master athletes rather than younger athletes. According to this, the incorrect statement is "The level of competition is not very high in most Masters  programs".

7 0
3 years ago
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