Resistance of the bulb is 7.5 ohms
Explanation:
- In a circuit, according to Ohm's Law, the potential difference (voltage) across an element is directly proportional to the current flowing through it.
That is, V ∝ I
⇒ V = IR, where R is the constant of proportionality called the resistance.
- Here, current, I = 0.4 A and potential difference, V = 3 V
Resistance, R = V/I = 3/0.4 = 7.5 ohms
Answer:
Matter can not be created or destroyed, it only changes forms.
Explanation:
conservation of matter
Answer:
Upright and smaller than the object
Explanation:
Diverging lens as the name suggests that the rays diverge after the refraction and do not meet in reality. A concave lens is called diverging lens. When there is refraction of light through a concave lens then the light bends away from the principal axis and hence never meet in reality but on tracing the rays backwards the rays appear to meet leading to the formation of a virtual image, which is erect and smaller than the object for an object placed at the focus of the lens.
Similar image is formed for any case when the object is between optical center and infinity.
Jjjhgggghujjnnbcxxddrtyyujjnn.
The wind tunnel speed that must be used to test the car 1 / 5 model of a car that normally runs at 30 mph is 150 mph
Re = u L / ν
Re = Reynold's number
u = Flow speed
L = Characteristic linear dimension
ν = Kinematic viscosity
ν
= 1.516 * 
m² / s
ν = ν
= 1.516 * m² / s
L = L / 5
u = 30 mph
Re = u L / 5 * 1.516 *
Re = 30 L / 1.516 *
In tunnel,
Re = Re
u L / 5 * 1.516 * = 30 L / 5 * 1.516 *
u = 30 * 5
u = 150 mph
Therefore, the wind tunnel speed that must be used to test the car is 150 mph
To know more about Reynold's number
brainly.com/question/12977616
#SPJ1
