Power (rate of using energy) = (voltage) x (current)
Power of this heating element = (120 V) x (3.2 A) = 384 watts
The easy way:
384 watts = 0.384 kilowatt
(0.384 kilowatt) x (5 hours) = 1.92 kilowatt-hour
Another way:
384 watts = 384 joules per second .
(384 joule/sec) x (3600 sec/hour) x (5 hours)
= (384 x 3600 x 5) (joules) = 6,912,000 joules.
Answer:
Option d
Explanation:
From Maxwell's law, we know that;
where
E = Electric Field
B = Magnetic Field
Also from Lenz Law:
emf, e = -
where
= magnetic flux linkage
Now, in order for the current not to be induced in the loop, option a and c do not hold.
Since from the above equations, variation in both or any of the magnetic and electric fields will result in the induction of current as both are vector.
For the option b, if we rotate the loop about the diameter or increase the size or area of the loop, it will result in the change in its magnetic flux and current will be induced as is clear from the given equation:
Now, in case of option d, if we consider a uniform magnetic field, then there won't be any variation and hence no current will be induced while we slide the wire perpendicular to the loop.
Answer:
General intelligence refers to the existence of a broad mental capacity that influences performance on cognitive ability measures.
Specific intelligence refers to a person's aptitude in individual 'modalities' or abilities rather than the more general understanding of intelligence.
Explanation:
Answer:
acceleration
Explanation:
From the question: "FORCE... divided by the MASS..." is translated to a math equation as "F / m", where "F" is the force and "m" is the mass.
Now, the second Newton's law says "F = m . a ", where a is acceleration.
If you move m to the left side, clearly you have "F / m", and "a" is alone to the right. Math equation:
a = F / m
acceleration = force / mass
Answer:
#_bills = 2.59 10⁸ Bills
Explanation:
For this exercise we must calculate the length of the Earth's circle
L = 2π r
Let's reduce to the SI system
r = 6.40 10³ km (1000m / 1km) = 6.40 10⁶ m
d = 15.5 cm (1m / 100cm) = 0.155 m
L = 2π 6.40 10⁶
L = 40.21 10⁶ m
now we can use a direct rule of proportions (rule of three). If 1 bill has d = 0.155, how much bill will have L
#_bills = 1 L / d
#_bills = 1 40.21 10⁶6 / 0.155
#_bills = 2.59 10⁸ Bills
the total number of bills is 2.6 10⁸ bills