Student 1 is standing on a cart holding a small
stone, while student 2 is standing at rest on the
ground, as shown in the figure above. The cart is
moving at a constant speed v in the #r-direction,
as indicated by the coordinate system shown.
Student 1 drops the stone precisely when passing
student 2. Which of the following best represents
the path of the falling stone relative to student 1
and the path of the falling stone relative to
student 2 ?​

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:

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:

A

Explanation:

Remark

One of the handiest things to know in physics is something called dimensional analysis.

Look at the answers you are given. All of them are in N/m. That means 2 things.

No conversions are necessary

You divide Newtons / meters. You don't need to worry too much about a formula.

But if need a formula, it is F = k * x and you need k

x = 3.5 m

F = 20.0 N

k = F / x

k = 20.0/3.5

k = 5.71 to 3 places.

Answer:

f = - 0.143 m = - 14.3 cm

Explanation:

First, we will calculate the power of the combination of lenses:

P = P₁ + P₂

where,

P = Power of Combination = ?

P₁ = Power of first lens = - 5D

P₂ = Power of second lens = - 2D

Therefore,

P = - 5D - 2D

P = - 7D

Now, the focal length can be given as:

[tex]f = \frac{1}{P} \\\\f = \frac{1}{-\ 7\ D} \\\\[/tex]

f = - 0.143 m = - 14.3 cm

Negative focal length indicates that combination will act as diverging lens.

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:

134 f

Explanation:

The hottest temperature ever reliably measured in a desert was 134 degrees F, in Death Valley of the Mojave Desert in 1913.

Temperature. During the day, desert temperatures rise to an average of 38°C (a little over 100°F). At night, desert temperatures fall to an average of -3.9°C (about 25°F). At night, desert temperatures fall to an average of -3.9 degrees celsius (about 25 degrees fahrenheit).

Desert surfaces receive a little more than twice the solar radiation received by humid regions and lose almost twice as much heat at night. Many mean annual temperatures range from 20-25 degrees Celsius. The extreme maximum ranges from 43.5-49 degrees Celsius. Minimum temperatures sometimes drop to -18 degrees Celsius.

Answer:

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

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:

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:

There is a transformation of mass into energy un nuclear fusion

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:

The mass of the block m is:

[tex]m=M(sin(\theta)+\mu_{s}cos(\theta))[/tex]

Explanation:

Let's analyze the block by parts

For the block M

[tex]T-W_{x}-f_{f}=0[/tex] (1)

Where:

[tex]T-Mgsin(\theta)-\mu_{s}N=0[/tex]  

[tex]T-Mgsin(\theta)-\mu_{s}Mgcos(\theta)=0[/tex]  

For the block m

[tex]T-W=0[/tex]

[tex]T=mg[/tex] (2)

Now, let's combines equation (1) and (2):

[tex]mg-Mgsin(\theta)-\mu_{s}Mgcos(\theta)=0[/tex]  

Finally, let's solve it for block m.

[tex]mg-Mg(sin(\theta)+\mu_{s}cos(\theta))=0[/tex]

[tex]m=M(sin(\theta)+\mu_{s}cos(\theta))[/tex]

I hope it helps you!

Answer:

60

Explanation:

A box has base dimensions of 30 cm x 30 cm and a mass of 3 kg. Calculate to what

depth it sinks when placed in a tank of water (assume the sides are sufficiently high,

so that it floats). Density of water = 1000 kgm-3. Assume g=10 ms-2 for this problem.​

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]

I believe the answer is purple

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.

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:

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:

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:

t =0.6

Explanation:

So this is just a basic kinematics where the only force acting on the ball is gravity (9.8 m/s2 [down] and air resistance is negligible.

∆d=vi∆t+1/2at2

Because you're dropping the ball, initial velocity is 0

1.5= 0*(∆t) + 1/2a*t2

After some rearranging, t= root ((2*∆d)/a) Therefore t= 0.5532833352 or root(15)/7 t=0.6s

Answer:

12

Explanation:

Answer:

12?

Explanation:

Answer:

wavelength  4 cm

Explanation:

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:

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