answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Masja
3 months ago
10

A marble rolls with a velocity of 10 mm/s [E] on a game board that is being pulled [60o N of E] at 40.0 mm/s. What is the veloci

ty of the marble relative to the floor?

Physics
1 answer:
ValentinkaMS [3.4K]3 months ago
7 0

Answer:

R = 45.82[mm/s], with an angle of 48.95°

Explanation:

To solve this, the two vectors will be illustrated in a diagram, allowing someone viewing from outside the game board to see that the collective motion comes from both the marble's trajectory and the board's movement.

The image attached displays this vector addition. By utilizing the parallelogram law, we can derive the resultant vector, shown in red.

Next, we will break down the velocity vector of 40 [mm/s] into its x and y components.

x = 40*cos(60) = 20 [mm/s]

y = 40*sin(60) = 34.64 [mm/s]

<pConsequently, the resultant vector is:

Rx = 20 + 10 = 30 [mm/s]

Ry = 34.64 [mm/s]

<pApplying the Pythagorean theorem, we can ascertain the vector’s magnitude

R = \sqrt{(30)^{2} +(34.64)^{2} }\\ R = \sqrt{2099.92}\\R=45.82[mm/s]

Next, we can calculate the angle relative to the horizontal using the previously obtained components.

tan α = 34.46 / 30

α = 48.95°

You might be interested in
The magnitude of the Poynting vector of a planar electromagnetic wave has an average value of 0.939 W/m2. The wave is incident u
Yuliya22 [3333]

Answer:

The total energy can be expressed as T = 169.02 \ J

Explanation:

The problem states that

The Poynting vector, which measures energy flux, equals k = 0.939 \ W/m^2

The rectangle's length is represented by l = 1.5 \ m

The width of the rectangle is w = 2.0 \ m

The duration considered is t = 1 \ minute = 60 \ s

Mathematically, the overall electromagnetic energy incident on the area is given by

T = k * A * t

where A denotes the area of the rectangle, calculated as

A= l * w

By plugging in the respective values

A= 2 * 1.5

A= 3 \ m^2

Again substituting values

T = 0.939 * 3 * 60

T = 169.02 \ J

5 0
3 months ago
A 250 GeV beam of protons is fired over a distance of 1 km. If the initial size of the wave packet is 1 mm, find its final size
Maru [3345]

Answer:

The final size is nearly the same as the initial size because the increase in size1.055\times 10^{- 7} is remarkably small

Solution:

According to the problem:

The proton beam energy is E = 250 GeV =250\times 10^{9}\times 1.6\times 10^{- 19} = 4\times 10^{- 8} J

Distance traveled by the photon, d = 1 km = 1000 m

Proton mass, m_{p} = 1.67\times 10^{- 27} kg

Initial size of the wave packet, \Delta t_{o} = 1 mm = 1\times 10^{- 3} m

Now,

This operates under relativistic principles

The rest mass energy for the proton is expressed as:

E = m_{p}c^{2}

E = 1.67\times 10^{- 27}\times (3\times 10^{8})^{2} = 1.503\times 10^{- 10} J

This proton energy is \simeq 250 GeV

Thus, the speed of the proton, v\simeq c

The time to cover 1 km = 1000 m of distance is calculated as:

T = \frac{1000}{v}

T = \frac{1000}{c} = \frac{1000}{3\times 10^{8}} = 3.34\times 10^{- 6} s

According to the dispersion factor;

\frac{\delta t_{o}}{\Delta t_{o}} = \frac{ht_{o}}{2\pi m_{p}\Delta t_{o}^{2}}

\frac{\delta t_{o}}{\Delta t_{o}} = \frac{6.626\times 10^{- 34}\times 3.34\times 10^{- 6}}{2\pi 1.67\times 10^{- 27}\times (10^{- 3})^{2} = 1.055\times 10^{- 7}

Thus, the widening of the wave packet is relatively minor.

Hence, we can conclude that:

\Delta t_{o} = \Delta t

where

\Delta t = final width

3 0
2 months ago
The cluster of decisions that managers make to assist the organization to achieve its goals is known as:
Softa [3030]
The answer is option C. SWOT analysis. The compilation of decisions made by managers to aid the organization in reaching its objectives is referred to as SWOT Analysis.
Here are the options. A. Strategy B. Scenario planning C. SWOT analysis D. Diversification E. Related diversification
8 0
3 months ago
A transverse wave on a string has an amplitude A. A tiny spot on the string is colored red. As one cycle of the wave passes by,
Sav [3153]
Since it's classified as a transverse wave, the particle on the string moves horizontally as the wave progresses, without actual forward or backward travel. Consequently, the red dot shifts 'A' to the left, returns 'A' to the center, moves 'A' to the right, and goes back 'A' to the center once again. Thus, the red dot collectively travels a distance totaling 4A.
6 0
2 months ago
Other questions:
  • An Object moving at a velocity of 30 m/s slows to a stop in 7 seconds. What was its acceleration
    12·1 answer
  • A ray of yellow light ( f = 5.09 × 1014 hz) travels at a speed of 2.04 × 108 meters per second in
    8·1 answer
  • A microprocessor scans the status of an output I/O device every 20 ms. This is accomplished by means of a timer alerting the pro
    8·1 answer
  • You are attending a county fair with your friend from your physics class. While walking around the fairgrounds, you discover a n
    12·1 answer
  • Your grandmother enjoys creating pottery as a hobby. She uses a potter's wheel, which is a stone disk of radius R-0.520 m and ma
    14·1 answer
  • Which actions most likely cause the domains in a ferromagnetic material to align? Check all that apply. heating the material rub
    16·2 answers
  • 7. A stream of water strikes a stationary turbine blade horizontally, as the drawing illustrates. The oncoming water stream has
    8·1 answer
  • Determine the tension developed in cables OD and OB and the strut OC, required to support the 500-lb crate. The spring OA has an
    10·1 answer
  • Kendra separately pushes two boxes in a straight line at constant velocity over the same distance on level ground. Each box begi
    14·1 answer
  • In rural areas, water is often extracted from underground by pumps. Consider an underground water source whose free surface is 6
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!