5,8
Acidic hehe hope this helps
Explanation:
It is given that,
The speed of electromagnetic wave,
Frequency of x-ray,
We need to find the wavelength of an x - ray. The speed of a wave is given by the product of frequency and the wavelength. It is given by using relation as :
Hence, this is the required solution.
Answer:
26i-28j
Explanation:
Mathematically, rate of change of something with respect to another is obtained through the operation called differentiation. Integration is the reverse process of differentiation.
We know that force is the rate of change of momentum.
that is,
F=
where,
P=momentum
t=time
dP=small change in momentum
dt=small change in time
dP=Fdt (multiplying both sides with dt)
To get change of momentum within a particular time interval, we have to integrate the above expression giving the necessary limits according to the problem.
Here, we have to calculate the change in momentum between 1.0s and 2.0s. So, the limit of integration is 1.0 to 2.0.
Thus,
=
where,
p=momentum at t=1s
P=momentum at t=2s
substituting F in the above equation,
=
= P-p = Change in momentum between 1.0s and 2.0s
= (Since we can integrate each term of an expression separately)
=
=26i-28j
therefore the change in momentum between 1.0s and 2.0s is 26i-28j.
Note: the answer we got is a vector. Because momentum is a vector and therefore change in momentum is also a vector
Answer:
Before collision:
momentum to right = .14 * 3.5 = .49 kg m / s
momentum to left = .62 * 4.81 = 2.98 kg m / s
Total momentum = .49 - 2.98 = - 2.49 to left
M V = -2.49 net momentum to left
V = -2.49 / (.14 + .62) = -3.28 m/s to left
Answer:
6318 Joules
Explanation:
V = Voltage = 9 V
I = Current = 0.13 A
t = Time the GPS is used = 1.5 hours
Power
Energy is obtained when power is multiplied with time
∴ Electrical energy the GPS uses is 6318 Joules