1answer.
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
vredina [299]
3 years ago
6

Can someone help me with this physics question? I don't know which answer is correct.

Physics
1 answer:
san4es73 [151]3 years ago
5 0

3. Distance is a quantity that is always a vector.

B.

You might be interested in
Which of the following statements are true?
Tems11 [23]

Answer:

1) A time-varying magnetic field will produce an electric field.

4) A time-varying electric field will produce a magnetic field.

Explanation:

1) A time-varying magnetic field will produce an electric field.

TRUE

time varying magnetic field will produce electric field which is given as

E = \frac{r}{2}\frac{dB}{dt}

2) Time-varying electric and magnetic fields can propagate through space only if there is no matter in their path.

FALSE

Time varying electric field and magnetic field will induce each other and it can travel through any medium as well as it can travel without any medium also

3) Electric and magnetic fields can be treated independently only if they vary in time.

FALSE

electric field can be due to stationary charge and magnetic field due to current carrying elements so it is not compulsory to have time varying

4) A time-varying electric field will produce a magnetic field.

TRUE

Time varying electric field will produce magnetic field given as

B = \frac{\mu_o\epsilon_o A}{2r}\frac{dE}{dt}

3 0
3 years ago
The circuit court is also known as the court of appeals. <br> a. True<br> b. False
Romashka-Z-Leto [24]
It is true 

<span>(in the U.S. federal court system and some state court systems) an appellate    court intermediate between the trial courts and the court of last resort.</span><span>.<span>the   highest appellate court is  New York <span>State.</span></span></span>
5 0
3 years ago
Which missing item would complete this beta decay reaction?
Flauer [41]
For us to understand the missing item that would complete beta decay reaction, we need to achieve in depth understanding of chemical formulas and nuclear symbols. Next is to have great comprehension of the following points:
<span>1.) Neutron in nucleus breaks down and changes into a proton.
2) Then it emits an electron, as well as an anti-neutrino which go into space.
3) Lastly, atomic number continuously goes UP while mass number remains unchanged.</span>
8 0
3 years ago
A sprinter accelerates at 7.5 m/s from rest in 2.0 s, what distance did she go? (15 m)
a_sh-v [17]

Answer:

<em>The sprinter traveled a distance of 7.5 m</em>

Explanation:

<u>Motion With Constant Acceleration </u>

It's a type of motion in which the rate of change of the velocity of an object is constant.

The equation that rules the change of velocities is:

v_f=v_o+at\qquad\qquad [1]

Where:

a   = acceleration

vo = initial speed

vf  = final speed

t    = time

The distance traveled by the object is given by:

\displaystyle x=v_o.t+\frac{a.t^2}{2}\qquad\qquad [2]

Using the equation [1] we can solve for a:

\displaystyle a=\frac{v_f-v_o}{t}

The sprinter travels from rest (vo=0) to vf=7.5 m/s in t=2 s. Computing the acceleration:

\displaystyle a=\frac{7.5-0}{2}

a=3.75\ m/s^2

Now calculate the distance:

\displaystyle x=0*2+\frac{3.75*2^2}{2}

\displaystyle x=7.5\ m

The sprinter traveled a distance of 7.5 m

8 0
3 years ago
: A fan is placed on a horizontal track and given a slight push toward an end stop 1.80 meters away. Immediately after the push,
Leokris [45]

Answer:

The initial velocity is 1.27 m/s.

Explanation:

distance, s = 1.8 m

acceleration, a = - 0.45 m/s^2

final velocity, v = 0

let the initial velocity is u.

Use third equation of motion

v^2 = u^2 + 2 a s \\\\0 = u^2 - 2 \times 0.45\times 1.8\\\\u = 1.27 m/s

7 0
3 years ago
Other questions:
  • A typical stellar spectrum (a plot of intensity versus wavelength) includes a number of deep indentations in which the intensity
    11·1 answer
  • The spring constant in a given oscillating mass spring may be changed by
    9·1 answer
  • How much heat is needed to melt 16.5kg of silver that is initially at 20*c?
    9·1 answer
  • 1. A child standing on a bus remains still when the bus is at rest. When the bus moves
    6·2 answers
  • The Law of Biot-Savart shows that the magnetic field of an infinitesimal current element decreases as 1/r2. Is there anyway you
    9·1 answer
  • If a cup of coffee has temperature 95∘C95∘C in a room where the temperature is 20∘C,20∘C, then, according to Newton's Law of Coo
    13·1 answer
  • A firecracker breaks up into two pieces , one has a mass of 200 g and files off along the x –axis with a speed of 82.0 m/s and t
    12·1 answer
  • What does it mean when the mark on the ramrod disappears into the barrel of the muzzleloader?
    10·1 answer
  • What is the density of a piece of metal with a mass of 48g and a volume of 6 cm3
    5·1 answer
  • The intensity of a sound wave at a fixed distance from a speaker vibrating at 1.00 kHz is 0.750 W/m2. (a) Determine the intensit
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!