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Neko [114]
3 years ago
13

How does insulation in your home affect the transfer of thermal energy?

Physics
1 answer:
Llana [10]3 years ago
4 0
Heat loss through walls can be reduced using wall insulation
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The continental crust is:
vlada-n [284]

the relatively thick part of the earth's crust that forms the large landmasses. It is generally older and more complex than the oceanic crust.

3 0
3 years ago
Read 2 more answers
A 100kg couch is being pushed with 196N of force. As it slides along the ground it experiences a coefficient of friction of 0.1.
QveST [7]

Answer:98

Explanation:hope this helps!

4 0
3 years ago
A box is 4 m in the air and has 120 J of potential energy. What is the box's mass
hodyreva [135]

Answer:

Mass of the box is 3.06 kg

Explanation:

Potential energy (that depends on gravity) is the type of energy which is stored that relies on the general position of different parts of a body.  It is a property of a framework and not of an individual body or molecule; the framework made out of the Earth and the raised ball.

P.E = m.g.h                       Equation(1)

as we have to find the mass of the box then the formula for the mass will become

m=P.E/g(h)                      Equation(2)

as we know

P.E= 120J

h=4m

g=9.8m/s  

g is the gravitational acceleration

putting values in the equation(2)  

m = 120/9.8(4)

    = 120/39.2                    

    = 3.06 kg

mass of the box is 3.06 kg

 


5 0
4 years ago
How much work done when .0080 C is moved through a potential difference of 1.5 V? Use W = qV. A.
grin007 [14]

Answer:

0.012 J

Explanation:

We are given:

q = 0.0080C

Potential difference =  1.5V

W=qV

Substituting the values into the equation:

W=0.0080*1.5= 0.012J

8 0
3 years ago
(7) A 2500 lbm car moving at 25 mi/hr is accelerated at a constant rate of 15 ft/s2 up to a speed of 50 mi/hr. What is the force
balandron [24]

Answer:

The  force is  F =  1164.6\  lbf

The time is   \Delta t =  2.44 \  s

Explanation:

From the question we are told that

  The  mass of the car is  m  =  2500 \ lbm

   The  initial velocity of the car is u  =  25 \ mi/hr

   The final  velocity of the car is  v  =  50 \  mi/hr

  The acceleration is  a =  15 ft/s^2 =  \frac{15 *  3600^2}{ 5280} =  36818.2 \  mi/h^2

   

Generally the acceleration is mathematically represented as

      a =  \frac{v-u}{\Delta t}

=>   36818.2 =  \frac{50 - 25 }{ \Delta t}

=>   t = 0.000679 \  hr

converting to seconds

       \Delta t =  0.0000679 *  3600

=>     \Delta t =  2.44 \  s

Generally the force is mathematically represented as

        F  =  m * a

=>      F  =  2500 *  15

=>      F  =  37500 \ \frac{lbm *  ft}{s^2}

Now converting to foot-pound-second we have  

         F =  \frac{37500}{32.2}

=>        F =  1164.6\  lbf

7 0
3 years ago
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