The bread dough needs heat in order for the chemical process to take place, so the answer is “Absorbs energy”. Aka, heat.
Answer:
The magnitude of average emf is 9.813 mV.
Explanation:
Given that,
Number of turns = 25 turns
Diameter = 1.00 m
Magnetic field = 50.0μm
Time = 0.200 s
Angle = 180°
We need to calculate the area of the coil
Using formula of area
We need to calculate the average emf
Using formula of emf
Where, N = number of turns
A = Area
B = magnetic field
Put the value into the formula
Hence, The magnitude of average emf is 9.813 mV.
Answer:
Explanation:
b ) The problem is based on Doppler's effect of sound
f = f₀ x (V - v₀) /( )
f is apparent frequency ,f₀ is real frequency , V is velocity of sound , v₀ is velocity of observer going away , is velocity of source going away
778 = 840 x (340 - 14)/ (340 + )
340 + = 341.18
= 1.18 m /s
it will go away from the observer or the cyclist.
speed of train = 1.18 m /s
a )
For a stationary observer v₀ = 0
f = f₀ x V /( )
= 840 x 340 / (340 + 1.180)
= 837 Hz
Answer:
D) The horse’s velocity increases by 2 mi/h every 1 s as the horse moves south
Explanation:
Let's analyze all options:
A. The horse’s speed changes to 2 mi/h as the horse moves south The horse's speed is not 2 mi/h, but it increases 2 mi/h every second. So, this is false.
B. The horse’s speed decreases by 2 mi/h every 1 s. It would only decrease if the horse was moving north. Otherwise this is false.
C. The horse’s position decreases by 2 mi every 1 s as the horse moves south. It is not horse's position but its velocity what changes 2mi/h every second. Also false.
D. The horse’s velocity increases by 2 mi/h every 1 s as the horse moves south. Since given acceleration is positive, you can say that its velocity increases 2mi/h every second. So, this is true
It's the gravitational force that the ball exerts on the Earth. The two forces are equal and opposite.