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
bezimeni [28]
2 years ago
9

Pls solve this numerical.​

Physics
1 answer:
harkovskaia [24]2 years ago
4 0

Answer:

You should write the vectors in their proper sequence: i , j, k

If the vectors are perpendicular their dot product must be zero:

1) A dot B   is obviously zero since A and B have no common terms in i , j , k

2) looks like A = 2 i - 4 j + 3 k and B = i + 2 j + 2 k

A dot B = (2 * 1) + (-4 * 2) + (3 * 2) = 0

Note that the dot product produces a scalar with no direction (vector components)

Only i dot i, j dot j, and k dot k    have components   i dot j = zero, etc.

You might be interested in
Which of the following terms refers to energy that is stored; for example the gravitational energy of water behind a dam:
kolezko [41]
Answer is Potential Energy (A)
4 0
4 years ago
Find the current flowing out of the battery.​
klemol [59]

Answer:

0.36 A.

Explanation:

We'll begin by calculating the equivalent resistance between 35 Ω and 20 Ω resistor. This is illustrated below:

Resistor 1 (R₁) = 35 Ω

Resistor 2 (R₂) = 20 Ω

Equivalent Resistance (Rₑq) =?

Since, the two resistors are in parallel connections, their equivalence can be obtained as follow:

Rₑq = (R₁ × R₂) / (R₁ + R₂)

Rₑq = (35 × 20) / (35 + 20)

Rₑq = 700 / 55

Rₑq = 12.73 Ω

Next, we shall determine the total resistance in the circuit. This can be obtained as follow:

Equivalent resistance between 35 Ω and 20 Ω (Rₑq) = 12.73 Ω

Resistor 3 (R₃) = 15 Ω

Total resistance (R) in the circuit =?

R = Rₑq + R₃ (they are in series connection)

R = 12.73 + 15

R = 27.73 Ω

Finally, we shall determine the current. This can be obtained as follow:

Total resistance (R) = 27.73 Ω

Voltage (V) = 10 V

Current (I) =?

V = IR

10 = I × 27.73

Divide both side by 27.73

I = 10 / 27.73

I = 0.36 A

Therefore, the current is 0.36 A.

6 0
3 years ago
Label and describe what is happening in this picture
SOVA2 [1]
Something is reproducing.
7 0
3 years ago
Which nucleus completes the following equation?
melomori [17]

The nucleus that completes the equation given above is 218/85 At, which is option D.

<h3>What is a nuclear fission?</h3>

Nuclear fission is a nuclear reaction in which a large nucleus splits into smaller ones with the simultaneous release of energy.

According to this question, the following nuclear fission reaction is given: 222/87Fr = 4/2He+ ?

To find the missing nucleus, we subtract 4 from 222 to get 218, therefore, the nucleus that completes the equation given above is 218/85 At.

Learn more about nuclear fission at: brainly.com/question/913303

#SPJ1

4 0
2 years ago
What is happening inside muscles when they become sore?
Verizon [17]

Answer:

When muscles are required to work harder than they're used to or in a different way, it's believed to cause microscopic damage to the muscle fibres, resulting in muscle soreness or stiffness. DOMS is often mistakenly believed to be caused by a build up of lactic acid, but lactic acid isn't involved in this process.

Explanation:

4 0
3 years ago
Other questions:
  • In traveling to the Moon, astronauts aboard the Apollo spacecraft put themselves into a slow rotation to distribute the Sun's en
    14·1 answer
  • Plz plz answer quick...
    8·1 answer
  • According to the law of universal gravitation, what would happen to Earth if the Sun were somehow replaced by a black hole of th
    14·1 answer
  • Often a vector is specified by a magnitude and a direction; for example, a rope with tension T⃗ exerts a force of magnitude T=20
    11·2 answers
  • The force of gravity on an object is constant all over the earth. True False
    8·2 answers
  • This is the equation for the formation of magnesium chloride. Mg(s) + 2HCl(l) → MgCl2(aq) + H2(g) Which are the reactants and th
    13·1 answer
  • i know that when wind blows aginst a sail and propels the boat but if you had a whole bunch of leaf blowers blowing at the sail
    8·2 answers
  • NEED HELP ASAP.
    10·1 answer
  • A body is thrown up into the air takes a time of 4s to reach the height. What is the velocity with which the body was thrown up.
    12·1 answer
  • Hydroelectric plants are used to produce electricity. Electric generators are used in such plants that are linked to water-wheel
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!