What are some thermal insulators you can find in a normal house

(a) What is the angular speed ω about the polar axis of a point on Earth's surface at a latitude of 55° N? (Earth rotates about

Vaselesa [24]

Answer

given,

radius of earth = 6370 km

earths latitude = 55° N

time = 24 hour = 86400 s

angular speed = ω

a) $\omega = \dfrac{2\pi}{T}$

$\omega = \dfrac{2\pi}{86400}$

$\omega = 7.27 \times 10^{-5}rad/s$

b) $v = r\omega cos\theta$

$v = 6370\times 7.27 \times 10^{-5}\times cos 55^0$

$v = 266 m/s$

c) ω at equator

$\omega = \dfrac{2\pi}{T}$

$\omega = \dfrac{2\pi}{86400}$

$\omega = 7.27 \times 10^{-5}rad/s$

d) $v = r\omega cos\theta$

$v = 6370\times 7.27 \times 10^{-5}\times cos 0^0$

$v = 463 m/s$

6 0

3 years ago

If you adjusted the frequency to be lower than the resonant frequency, would the voltage have been leading ahead of or lagging b

tatyana61 [14]

Answer:

current will lead the voltage

Explanation:

From the bellow figure we can see the plot between the frequency and impedance

From the figure it is clear that when the frequency is less than the resonance frequency then the impedance decreases as the frequency increases it is possible only when impedance is capacitive in nature.

As the impedance is capacitive in nature so current will lead than the voltage

4 0

3 years ago

How do the magnitudes of the inertial (the density times acceleration term), pressure, and viscous terms in the Navier-Stokes eq

Troyanec [42]

Answer:

The general equation of movement in fluids is obtained from the application, at fluid volumes, of the principle of conservation of the amount of linear movement. This principle establishes that the variation over time of the amount of linear movement of a fluid volume is equal to that resulting from all forces (of volume and surface) acting on it. Expressed in This equation is called the Navier-Stokes equation.

The equation is shown in the attached file

Explanation:

The derivative of velocity with respect to time determines the change in the velocity of a particle of the fluid as it moves in space. It also includes convective acceleration, expressed by a nonlinear term that comes from convective inertia forces). With this equation, Stokes studied the motion of an infinite incompressible viscous fluid at rest at infinity, and in which a solid sphere of radius r makes a rectilinear and uniform translational motion of velocity v. It assumes that there are no external forces and that the movement of the fluid relative to a reference system on the sphere is stationary. Stokes' approach consists in neglecting the nonlinear term (associated with inertial forces due to convective acceleration).

Download pdf

5 0

3 years ago

What type of meter is connected in

madreJ [45]

Answer / Explanation:

B

Potential difference is measured using a device called a voltmeter . Just like ammeters, some types have a pointer on a dial, but most have a digital display. However, unlike an ammeter, you must connect the voltmeter in parallel to measure the potential difference across a component in a circuit.

6 0

2 years ago

20. Threshold braking in the vehicle's braking system

amm1812

The answer is b hope this helps

7 0

3 years ago