The bob (weight) at the end of a pendulum has a mass of 0.3 kilograms. The bob is pulled to position B and allowed to swing. It goes all the way to position C and swings
back.
joules. If the maximum height of the bob is 0.45 meters when it swings back,
joules of energy was
The potential energy of the bob at position B is
transformed to thermal energy.
Use g = 9.8 m/s2 and PE = mxgxn.

Answer:

38 N, 40.0° below the horizontal

Explanation:

Force exerted by an object equals mass times acceleration of that object: F = m ⨉ a. To use this formula, you need to use SI units: Newtons for force, kilograms for mass, and meters per second squared for acceleration.

Answer:

None.

Explanation:

        causes an object to change its position, i.e. to have a displacement.

        Since the laptop cart is at rest while he stops at the water fountain, no  

       net work done is on the laptop cart.

Answer:

Younger by nanoseconds

Explanation:

Not entirely sure :O

Answer:

At the centre

Explanation:

To prove the position of the centre of mass, usually we take a strip across the circular disc and call it dy; calculate the length of the strip; calculate the mass per unit area of the disc. And then when we carry out some integral operations using R and -R as the boundaries we will arrive at y_cm = 0 which means the centre y_cm is at the centre of mass of this uniform disc.

Answer:

"12.122 m/s²" is the appropriate solution.

Explanation:

The given values in the question are:

Length,

l = 49.0 cm

or,

 = [tex]49.0\times 10^{-2} \ m[/tex]

Time taken,

[tex]T = \frac{125}{99.0}[/tex]

   [tex]=1.2626 \ s[/tex]

Now,

As we know,

⇒  [tex]T = 2 \pi\sqrt{\frac{l}{g} }[/tex]

or,

⇒  [tex]T^2=4 \pi^2[\frac{l}{g} ][/tex]

     [tex]g = 4\pi^2[\frac{l}{T^2} ][/tex]

By substituting the above given values, we get

        [tex]=\frac{4\times (3.14)^2\times (49.0\times 10^{-2})}{(1.2626)^2}[/tex]

        [tex]=\frac{39.4384\times 49.0\times 10^{-2}}{1.59415876}[/tex]

        [tex]=\frac{19.324816}{1.59415876}[/tex]

        [tex]=12.122 \ m/s^2[/tex]

Answer:

Answer 43cm

Explenation:

if you divide it to 4 it will convert to 43 so answer is 43cm if this wrong im sorry but mine is perfect thankss :)

Answer:

v = 341.11 m/s

Explanation:

Given that,

The official world land speed was recorded as 1228.0km/h on October 15,1997.

We need to find the speed in m/s.

We know that,

1 km = 1000 m

1 h = 3600 s

So,

[tex]v=1228\ km/h\\\\=1228\times \dfrac{1000\ m}{3600\ s}\\\\v=341.11\ m/s[/tex]

So, the required speed is 341.11 m/s.

Answer:

a.work done=force *displacement

=500N*46m

=23000 Joule

b.power=work done/time taken

=23000/25

=920 watt

c.GPE=m*g*h(m=mass,g=gravity due to acceleration,h=height)

=60kg*9.8m/s*14m

=8232 joule

Explanation:

Answer:

blocks of ice are usually covered with cloth or sawdust while being stored

Answer:

15.64 V

Explanation:

From the question given above, the following data were obtained:

Capacitor (C) = 3.33x10¯⁶ F

Energy (E) = 8.15×10¯⁴ J

Voltage (V) =?

The voltage across the capacitor can be obtained as follow:

E = ½CV²

8.15×10¯⁴ = 3.33x10¯⁶ × V²

Divide both side by 3.33x10¯⁶

V² = 8.15×10¯⁴ / 3.33x10¯⁶

Take the square root of both side

V = √(8.15×10¯⁴ / 3.33x10¯⁶)

V = 15.64 V

Thus, the voltage across the capacitor is 15.64 V

Answer:

22.12

Explanation:

on accellus

Answer:

The answer is "[tex]1.144 \times 10^{-4} \ m[/tex]".

Explanation:

[tex]w=\frac{2.44 \lambda L}{D}\\\\D=\frac{2.44 \lambda L}{w}\\\\[/tex]

   [tex]=\frac{2.44 \times 633 \times 10^{-9}\times 4 }{0.054}\\\\=\frac{6178.08\times 10^{-9}}{0.054}\\\\=1.144 \times 10^{-4} \ m[/tex]

Answer:

A gamma rays

B x-rays

D radio waves

E visible light

The four types of electromagnetic radiation are: gamma rays, X-rays,  radio waves, and visible light.

A flow of energy in which the electrical and magnetic fields change simultaneously is known as electromagnetic radiation. Electromagnetic radiation includes radio waves, microwaves, infrared, visible, ultraviolet, X, and gamma rays among others.

Through oscillating magnetic and electrical fields produced by their particles, electromagnetic radiation travels through space and vacuum. Sir James Clerk Maxwell, a Scottish scientist, presented the Electromagnetic Radiation theory in the early 1870s.

Heinrich Hertz, a German physicist, confirmed it experimentally. According to Maxwell, as an electrically charged particle accelerates, alternating electrical and magnetic fields are created, aiding the particle's propagation.

Gamma rays, X-rays,  radio waves, and visible light are four types of electromagnetic radiation.

Learn more about electromagnetic radiation here:

https://brainly.com/question/10759891

#SPJ2

Answer:

Average :

UCL = 4.15

LCL = 2.65

Range :

UCL = 2.75

LCL = 0

Explanation:

Given :

Sample size, n = 5

Average, X = 3.4

Range, R = 1.3

A2 for n = 5 ; equals 0.577 ( X chart table)

For the average :

Upper Control Limit (UCL) :

X + A2*R

3.4 + 0.577(1.3) = 4.1501

Lower Control Limit (LCL) :

X - A2*R

3.4 - 0.577(1.3) = 2.6499

FOR the range :

Upper Control Limit (UCL) :

UCL = D4*R

D4 for n = 5 ; equals = 2.114

UCL = 2.114*1.3 = 2.7482

Lower Control Limit (LCL) :

LCL = D3*R

D3 for n = 5 ; equals = 0

LCL = 0 * 1.3 = 0

Answer:

A) you can't see far ahead

D. You may struggle to stay at the same speed.

Winding roads and sharp curves are dangerous because of centrifugal forces while taking curves, whose classic formula is described below:

[tex]F = m\cdot \frac{v^{2}}{r}[/tex] (1)

Where:

Sharps curves are characterized by low radii of curvature. Given that centrifugal force is inversely proportional to the square radius of curvature and it is opposed to friction force between tires and pavement, if centrifugal force is higher than maximum static friction force, then a car accident could if driver does not decelerate.

Therefore, correct choice is D.

We kindly invite to see this question on centrifugal forces: https://brainly.com/question/545816

Answer:

Explained below

Explanation:

For the geometric meaning, I've attached a parallelogram showing two vectors a and B and also the angle between them as θ.

We can see that the two vectors are adjacent to each other.

So the magnitude of the product of the two vectors is simply the area of the parallelogram which is base x height. Thus;

Magnitude = |a| sin θ × |b|

This can be rewritten as;

|a|•|b| sin θ

Answer:

wavelength  4 cm

Explanation:

Answer:

There is a transformation of mass into energy un nuclear fusion

Answer:

Tissue: cardiac muscle

Organ: Heart

Organ System: Human Body, Circulatory System

Explanation:

The cardiac muscle makes up an organ, making it a tissue

The Heart makes up a organ system, making it an organ

Both the human Body and The Circulatory System make up an organism, making them organisms

Answer:

Genetic counseling without testing cost on average $213, whereas counseling, testing, and disclosure of results totaled $2057. A brief physician-based counseling instead of genetic counselor-based counseling would produce only small reductions in total costs.

hope it helps, please give me brainliest.

Answer:

Condensation can also produce water droplets on the outside of soda cans or glasses of cold water. When warm air hits the cold surface, it reaches its dew point and condenses. This leaves droplets of water on the glass or can.

Explanation:

Explanation:

A ray of light travels through air (n = 1.00) and approaching the boundary with ... The angle of incidence is 45.0°. ... Determine the angle of refraction at the linseed oil-water boundary. n= c/ ...

Answer:

correct answer is D

Explanation:

In the covalent bond, a pair of electrons is shared between two atoms, in this case we have 4 electrons in one atoms and they are shared in pairs, so for these as far apart as possible due to electron-electron repulsion between the electrons of different bonds it must have a TETRAHEDRAL geometry

the correct answer is D

The potential difference across Vb - Va is 38 Volts

Considering the given circuit we have to apply Kirchoff's Voltage Law (KVL) in order to calculate potential difference across Va and Vb.

  Here it is given that current I = 1.5 A flows from point a to b. With reference to the direction of flow of current the 20V battery is considered of positive potential and the 12V battery is considered of negative potential.

Applying KVL :  Va - Vb = 20V + (1.5 × 20)V - 12V

                          Va - Vb = 38V

Learn more about Kirchoff's Voltage Law:

https://brainly.com/question/14595133

Answer:

The appropriate solution is:

(a) [tex]\frac{1}{4}(I_o)[/tex]

(b) [tex]\frac{1}{4} (u_o)[/tex]

(c) [tex]\frac{1}{2}B_o[/tex]

Explanation:

According to the question, the value is:

Power of bulb,

= 60 W

Distance,

= 1.0 mm

Now,

(a)

⇒  [tex]\frac{I}{I_o} =\frac{r_o_2}{r_2}[/tex]

On applying cross-multiplication, we get

⇒  [tex]I=I_o\times \frac{1_2}{2^2}[/tex]

⇒     [tex]=I_o\times \frac{1}{4}[/tex]

⇒     [tex]=\frac{1}{4} (I_o)[/tex]

(b)

As we know,

⇒ [tex]\frac{u}{u_o} =\frac{I}{I_o}[/tex]

By putting the values, we get

⇒ [tex]u=\frac{1}{4}(u_o)[/tex]

(c)

⇒ [tex]\frac{B^2}{B_o^2} =\frac{u}{u_o}[/tex]

         [tex]=\frac{I}{I_o}[/tex]

⇒ [tex]B=B_o\times \sqrt{\frac{1}{4} }[/tex]

⇒     [tex]=\frac{1}{2}(B_o)[/tex]

it's 9:46AM for me lol

Answer:

lol it's 11:46 pm for me, just trying to get every done before tommorow aka the last day of school

Answer:

Electric forces exist among stationary electric charges; both electric and magnetic forces exist among moving electric charges. The magnetic force between two moving charges may be described as the effect exerted upon either charge by a magnetic field created by the other.

Answer:

i think this could help you