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inessss [21]
3 years ago
7

Calculate the force of gravity acting on an object that has a mass of 1.3 kilograms. The object is on Earth soyuz 9.8 m / S 2 fo

r the acceleration due to gravity
A 12.7 N
B 1270 N
C 0.13 N
D 7.5 N
Physics
1 answer:
aleksklad [387]3 years ago
4 0
A) 12.7 cause
weight = g. mass
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Using the equation E = hc/λ we can find out how much energy a single photon of wavelength 193 nm has. E = Planck Constant * Speed of Light/193 nm

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3 years ago
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How do an object's mass<br> and velocity relate to its<br> momentum?
uysha [10]
Momentum depends upon the variables mass and velocity. In terms of an equation, the momentum of an object is equal to the mass of the object times the velocity of the object.
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3 years ago
3.Felipe was enjoying the sunny day at the beach. He told his friend Carl that he was really
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Felipe was enjoying the sunny day at the beach. He told his friend Carl that he was really  enjoying the warm feeling that he was getting as he sat in the Sun. Carl explained that the  electromagnetic radiation was responsible for this warm feeling. The electromagnetic spectrum which was responsible for making Felipe feel warm is

<u>Infrared rays</u>

Explanation:

  • Infrared radiation (IR), or infrared light, is a type of radiant energy that's invisible to human eyes but that we can feel as heat.
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  • Infrared radiation has a longer wavelength and lower frequency than visible light. Too much exposure can damage your eyes and skin. On a global scale, trapped infrared radiation contributes to global warming.
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3 0
3 years ago
A 0.3423 g sample of pentane, C5H12, was burned in a bomb (constant-volume) calorimeter. The temperature of the calorimeter and
Yakvenalex [24]

Answer:

16.82 kJ/g

Explanation:

The Heat energy generated by the pentance combusion caused the temperature increasing of the caloriemeter and the water inside it.

Heat energy of a substace can be calculated using

Q = mcθ

C= mc

where Q = Heat energy

          m =mass

          c = specific heat capacity

          C = heat capacity

          θ =temperature difference

(Temperature difference = final temperature - initial temperature.)

heat absorbed by water = mcθ

                                         = 1  * 4.184 * (22.82-20.22)

                                         = 10.88 J --------------(1)

heat absorbed by calorimeter = Cθ

                                                  = 2210 *(22.82-20.22)

                                                  = 5746 J ---------------(2)

Combustion energy = heat absorbed by water + heat absorbed by                                                  calorimeter

Combustion energy =  10.88+ 5746 = 5756.88 J

                                 = 5.757 kJ

heat of combustion of pentane = Combustion energy / mass

                                                    = 5.757 / 0.3423

                                                    = 16.82 kJ/g

8 0
3 years ago
At t= 10 s, a particle is moving from left to right with a speed of 5.0 m/s. At t=20 s, the particle is moving right to left wit
Shkiper50 [21]

Answer

given,

at time t = 10 s  moving from left to right speed of particle = 5 m/s

at t = 20 s  moving from right to left speed of particle is = 8 m/s

a) acceleration

      a = \dfrac{\Delta V}{\Delta t}

      a = \dfrac{-8-(5)}{20-10}

            a = -1.3 m/s²

b) using equation of motion

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      5 = u - 1.3 × 10

      u = 5 + 13

      u = 18 m/s

c) v = u + at

   0  = 18 - 1.3t

  t = \dfrac{18}{1.30}

     t = 13.85 s

4 0
3 years ago
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