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
Alexandra [31]
3 years ago
8

Can anyone help me ??

Physics
1 answer:
mash [69]3 years ago
3 0
It's the second one that the answer
You might be interested in
You stand new the earth's equator. A positively charged particle that starts moving parallel to the surface of the earth in a st
Talja [164]

Answer:

c. from south to north

Explanation:

since we know that:

F = qv×B

where F is the force and in this case is pointed upward

where v is the velocity due east

the field must be due north by the right hand rule

Therefore,  near the equator the magnetic field lines of the earth are directed north from south

3 0
3 years ago
An electromagnetic wave is propagating towards the west. At a certain moment the direction of the magnetic field vector associat
-BARSIC- [3]

Answer:

either +z direction or -z direction.

Explanation:

The direction of the electric field, in an electromagnetic wave always is perpendicular to the direction of the magnetic field and the direction of propagation of the wave.

You assume a system of coordinates with the negative x axis as the west direction, and the y axis as the up direction

In this case, the wave is propagating toward the west (- x direction), and the magnetic field vector points up (+ y direction), then, it is mandatory that the electric field vector points either +z direction or -z direction.

5 0
3 years ago
A biker starts from rest and reaches a speed of 10 m/s after t travelling with
Natali [406]

Answer:

2m/s^2

Explanation:

we can use this formula to get the answer:

(vf - vi) / t = a

Since vf= 10m/s, vi=0m/s, and t=5

We can just substitute the values into the formula to get the result

that is:

(10 - 0) / 5 = 2m/s^2

6 0
3 years ago
Read 2 more answers
When all forces on an object are balanced, the object is in .. What?
Basile [38]
The object is in Equilibrium Sir/Ma'am.
<span />
6 0
3 years ago
Read 2 more answers
Medical cyclotrons need efficient sources of protons to inject into their center. In one kind of ion source, hydrogen atoms (i.e
antoniya [11.8K]

Answer:

r=5.278\times 10^{-4}\ m

Explanation:

Given that:

  • magnetic field intensity, B=0.07\ T
  • kinetic energy of electron, KE=1.2\ eV= 1.2\times 1.6\times 10^{-19}\ J= 1.92\times 10^{-19}\ J
  • we have mass of electron, m=9.1\times 10^{-31}\ kg

<em>Now, form the mathematical expression of Kinetic Energy:</em>

KE= \frac{1}{2} m.v^2

1.92\times 10^{-19}=0.5\times 9.1\times 10^{-31}\times v^2

v^2=4.2198\times 10^{11}

v=6.496\times 10^6\ m.s^{-1}

<u>from the relation of magnetic and centripetal forces we have the radius as:</u>

r=\frac{m.v}{q.B}

r=\frac{9.1\times 10^{-31}\times 6.496\times 10^6 }{1.6\times 10^{-19}\times 0.07}

r=5.278\times 10^{-4}\ m

6 0
4 years ago
Other questions:
  • SOMEONE PLEASEEEEEEEEEEEEEEEEEEEE HELPPPPPPPPPPPPPPP
    8·1 answer
  • How much charge must pass by a point in a wire in 1.5 s for the current inb the wire to be 2.0 A?
    14·1 answer
  • A fuse in an electric circuit is a wire that is designed to melt, and thereby open the circuit, if the current exceeds a predete
    13·1 answer
  • A rock is thrown at a window that is located 18.0 m above the ground. The rock is thrown at an angle of 40.0° above horizontal.
    9·1 answer
  • Children slide down a friction-less water slide that ends at a height of 1.80 m above the pool. If a child starts from rest at p
    11·1 answer
  • A seismic wave is energy released as the result of rock movement along a fault.<br> T/F
    8·1 answer
  • Give examples to show that friction is both friend and foe ?​
    11·2 answers
  • C. You push a sled of mass 15 kg across the snow with a force of 180 N for a distance of 2.5 m. There is no friction. If the sle
    12·1 answer
  • If an object is accelerating, which of the following MUST be true?
    13·1 answer
  • In order for water to condense on an object, the temperature of the object must be ______ the dewpoint temperature.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!