Answer:
Part a)
P = 1200 Watt
Part b)
P = 480 W
Part c)
Explanation:
Part a)
Power consumed by blow dryer is given as
here supply voltage is given as
current rating of blow dryer is given as
Part b)
Power consumed by vacuum cleaner is given as
here supply voltage is given as
current rating of vacuum cleaner is given as
Part c)
Energy consumed in a given interval of time is given as
now we have to find the ratio of energy consumed in time interval of 11 minutes
so we have
now we have
Question:
Diffusion is the movement of particles from high to low concentration. True or False
Answer:
True.
Explanation:
Diffusion is a process that allows the movement of substance or particles in and out of cells through a semipermeable membrane.
Diffusion is a process that allows the spread or movement of particles from the region of higher concentration to a region of lower concentration through a semipermeable membrane.
Diffusion only occurs in gases and solution but not in solids, it also occurs only where particles can move freely.
Note: When particles move from the region of higher concentration to a lower concentration, it gives room for even, uniform and random distribution of particles.
Answer:
You have to calculate
Explanation:
Work is done when a force that is applied to an object moves that object. The work is calculated by multiplying the force by the amount of movement of an object (W = F * d). A force of 10 newtons, that moves an object 3 meters, does 30 n-m of work.
By definition, speed is the integral of acceleration with respect to time.
We have then:
As the acceleration is constant, then integrating we have:
Where,
vo: constant of integration that corresponds to the initial velocity
We observe then that the speed varies linearly when the acceleration is constant
.
Therefore, for constant acceleration, the velocity is changing.
Answer:
an object with a constant acceleration always have:
A. changing velocity
Answer:
4.5 N upward
Explanation:
You take the net force and subtract it from the weight
~DjMia~