Answer:
The sun looks bigger than other stars because it is closer to the Earth, distance makes it look larger
Answer: The person will still have a mass of 90kg on Mars
Explanation: The Truth is, the mass of a body remains constant from place to place. It is the weight which is equal to {mass of body * acceleration due to gravity{g}} that varies from place to place since it is dependent on {g}.
In this case the person will have a Weight of 90*9.8 = 882N on Earth.
{ "g" on Earth is 9.8m/s²}
And a Weight of 90*3.3 = 297N on Mars.
{ From the question "g" on Mars is {9.8m/s²}/3 which is 3.3m/s²}
From this analysis you notice that the WEIGHT of the person Varies but the MASS remained Constant at 90kg.
Answer:
<h2>E) 52.5 cm</h2>
Explanation:
Step one:
given data
period T= 3 milliseconds= 0.003
velocity v= 175m/s
wave lenght λ=?
Step two:
we know that f=1/T
the expression relating period and wave lenght is
v=λ/T
λ=v*T
λ=175*0.002
λ=0.525m
to cm= 0.525*100
=52.5cm
The wavelength of the wave is E) 52.5 cm
Answer:
vacuum have no air. so, the hot body will remain unchanged in temperature
Explanation:
Answer:
44.85C
Explanation:
Let the specific heat of glass thermometer be 0.84 J/g°C
Let the specific heat of water be 4.186 j/g °C
Let the water density be 1kg/L
136 mL of water = 0.136L of water = 0.136 kg of water = 136 g of water
Since the change of temperature on the glass thermometer is 43.6 - 22 = 21.6 C. We can then calculate the heat energy absorbed to it:
Assume no energy is lost to outside, by the law of energy conservation, this heat energy would come from water
