A. iodine is located in period 5, group 17 and is classified
as a nonmetal
Group is the column, period is the raw.
Answer:Sometime decreases and sometime increases.
Explanation:
Given
Projectile is launched at
so horizontal velocity=ucos35
vertical velocity=usin35
since gravity acts in the vertical direction, therefore, it affects only the vertical component of the projectile.
So Vertical velocity first decrease up to maximum height and then starts to increase.
Answer:
a) 201.11minutes
b) 223.75minutes
Explanation:
Heat energy is defined as the energy required to change the temperature of a substance by 1kelvin.
It is expressed as H = mc∆t where m is the mass of the water
c is the specific heat capacity of the water/ice
∆t is the change in temperature
Total heat required to melt the ice
H = mLice + mc∆t
Lice is the latent heat of fusion of ice
a) To calculate how much time tmelts passes before the ice starts to melt, we will only calculate heat energy absorb by the ice before it melts.
H = mLice
H = 0.55(334000)
H = 183,700Joules
If heat is supplied to the container at the constant rate of 900 J/minute, the time taken before the ice starts to melt will be:
t = 183700/900
t = 201.11minutes
b) To calculate how much time trise does it take before the temperature begins to rise above 0°C, we will calculate the total energy absorbed at 0°C first.
H = 0.55(334000) + 0.55(2100)(0-(-15.3)
Note that the ice melts at 0°C which will be the final temperature
H = 183700+17671.5
H = 201,371.5Joules
Since heat is supplied to the container at the constant rate of 900 J/minute
900Joules = 1minute
201,371.5Joules= x
900x = 201,371.5
x = 201,371.5/900
x =223.75minutes
The time taken before the temperature begins to rise is 223.75minutes
Answer:
According to the given research it is true that atherosclerosis cardiovascular disease has become common amongst everyone at any age. Consumption of herbal tea on a daily basis prevents from having cardiovascular disease and many others health
Explanation: