Answer:
6 m/s
Explanation:
mass of moving car m1=5000 kg
initial velocity of moving car vi1=?
mass of car at rest = m2=10000 kg
initial velocity of car at rest = vi2=0
final velcoities of both cars after collision = vf1=vf2= 2m/s
using conservation of momentum rule
m1vi1+m2vi2=m1vf1+m2vf2
putting values
==> 5000 × vi1 + 1000 × 0 = 5000 × 2 + 10000 × 2
==> 5000 ×vi1 = 2 × 15000
==> vi1 = 2 × 15000 ÷ 5000
==> vi1= 2×3=6 m/s
Explanation:
Given that,
Wavelength of light, 
Angle, 
We need to find the slit spacing for diffraction. For a diffraction, the first order principal maximum is given by :
n is 1 here
d is slit spacing
So, the slit spacing is 
.
Allotropes are different forms of the same element. Different bonding arrangements between atoms result in different structures with different chemical and physical properties. Allotropes occur only with certain elements, in Groups 13 through 16 in the Periodic Table.
Answer:
1.5024
Explanation:
Draw a diagram. Put the two cells in series. Now draw 3 resistors. Two of them equal 0.26 ohms each. The third one is the lightbulb which is 12 ohms.
R = 0.26 + 0.26 + 12 = 12.52
The bulb has a voltage of 2.88 volts across it. You can get the current from that.
i = E / R
i = 2.88 / 12 =
i = 0.24 amps.
Now you can get the voltage drop across the two cells.
E = ?
R = 0.26
i = 0.24 amps
E = 0.26 * 0.24
E = 0. 0624
Finally divide the 2.88 by 2 to get 1.44
Each cell has an emf of 1.44 + 0.0624 = 1.5024
Answer:
Corpuscular theory of light
Explanation:
In optics, the corpuscular theory of light, arguably set forward by Descartes in 1637, states that light is made up of small discrete particles called "corpuscles" which travel in a straight line with a finite velocity and possess impetus. This was based on an alternate description of atomism of the time period.
