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
Yuliya22 [10]
2 years ago
8

Sue and Jenny kick a soccer ball at exactly the same time. Sue’s foot exerts a force of 75.9 N to the north. Jenny’s foot exerts

a force o 105.8 N to the east. What is the magnitude of the resultant force on the ball?
Physics
1 answer:
Lady_Fox [76]2 years ago
6 0

Answer:

Fr^2 = 75.9N+105.8N=181.7

<u><em>Fr = </em></u><u><em>181.7N.</em></u>

You might be interested in
Help please fast + i dont want an answer from g**gle .
velikii [3]
7) 6, i believe, (Cu) 1 atom+ (S) 1 atom+(0)4 atoms.
7 0
3 years ago
At each corner of a square of side l there are point charges of magnitude Q, 2Q, 3Q, and 4Q.What is the magnitude and direction
bogdanovich [222]

Answer:

magnitude of force on charge 2Q  = \frac{KQ^{2} }{I^{2} }

Direction of force on charge = 61 ⁰

Explanation:

The magnitude on the force on the charge can be evaluated by finding the net force acting on the charge 2Q  i.e x-component of the net force and the y-component of the net force

║F║ = \sqrt{f_{x}^{2} + f_{y}^{2}    }  =  after considering the forces coming from Q, 3Q and 4Q AND APPLYING COULOMBS LAW

magnitude of force acting on 2Q = \frac{KQ^{2} }{I^{2} }

The direction of the force on charge 2Q is calculated as

tan ∅ = \frac{f_{y} }{f_{x} } = 1.8284

therefore ∅ = tan^{-1}  1.8284

= 61⁰

3 0
3 years ago
Q.By the method of dimensional analysis derive the
Artyom0805 [142]

Answer

a) Using dimensional analysis we cannot derive the relation, But we can check the  correctness of the formula.

  s = u t +\dfrac{1}{2}at^2

now,  L H S

  s = distance

  dimension of distance = [M⁰L¹T⁰]

now, equation on the right hand side

 R H S

 u = speed

 u = m/s

 Dimension of speed = [M⁰L¹T⁻¹]

dimension of time

  t = sec

 Dimension of time = [M⁰L⁰T¹]

 Dimension of 'ut' = [M⁰L¹T⁻¹][M⁰L⁰T¹]

                              = [M⁰L¹T⁰]

now, acceleration= a

  a = m /s²

dimension of acceleration = [M⁰L¹T⁻²]

dimension of (at²) = [M⁰L¹T⁻²][M⁰L⁰T¹][M⁰L⁰T¹]

                              = [M⁰L¹T⁰]

hence, the dimension are balanced.

so, L H S = R H S

b) Moment of inertia of hollow sphere = \dfrac{2}{3}Mr^2

  Moment of inertia of solid sphere = \dfrac{2}{5}Mr^2

   we know,

    \tau = I \alpha

    \alpha=\dfrac{\tau}{I}

Torque is the force that causes rotation

If the same amount of torque is applied to both spheres the sphere with bigger moment of inertia would have smaller angular velocity.

Thus the solid sphere would accelerate more.

4 0
3 years ago
Read 2 more answers
Look at the picture of the prism separating light. Which explains why a prism can separate sunlight into a rainbow of all the vi
olga55 [171]

It is either A or B  i hope this helps

3 0
3 years ago
A horizontal force of 40N is needed to pull a 60kg box across the horizontal floor at which coefficient of friction between floo
Mazyrski [523]

Answer:

Coefficient of friction is 0.068.

Work done is 320~J.

Explanation:

Given:

Mass of the box (m): 60 kg

Force needed (F): 40 N

The formula to calculate the coefficient of friction between the floor and the box is given by

F=\mu mg...................(1)

Here, \mu is the coefficient of friction and g is the acceleration due to gravity.

Substitute 40 N for F, 60 kg for m and 9.80 m/s² for g into equation (1) and solve to calculate the value of the coefficient of friction.

40 N=\mu\times60 kg\times9.80 m/s^{2} \\~~~~~\mu=\frac{40 N}{60 kg\times9.80 m/s^{2}}\\~~~~~~~=0.068

The formula to calculate the work done in overcoming the friction is given by

W=Fd..........................(2)

Here, W is the work done and d is the distance travelled.

Substitute  40 N for F and 8 m for d into equation (2) to calculate the work done.

W=40~N\times8~m\\~~~~= 320~J

8 0
2 years ago
Other questions:
  • Which of the following is NOT a layer of the Sun?
    14·1 answer
  • If the air pressure is doubled, the speed of sound
    11·1 answer
  • 1. A 100-kg crate is pulled across a warehouse floor using a rope with a force of 250 N at an angle of 45o from the horizontal.
    12·1 answer
  • List three (3) specific examples of each biological<br> Homeostasis:<br> Metabolism:<br> Growth:
    8·1 answer
  • A 100kg car travels at 2m/s. what is the momentum in kg
    7·1 answer
  • 14. Which of the following is not an example of work being done?
    10·1 answer
  • A bicyclist travels at the speed of 25 kilometers per hour for 5 hours. How far does the bicyclist go?
    11·2 answers
  • One particle has a charge of -1.87 x 10-9 C, while another particle has a charge of -1.10 x 10-9 C. If the two particles are sep
    10·1 answer
  • 9. If 100 J of work is done in 20 second the power is ..
    9·2 answers
  • Sample Response: When there is less rainfall, land, which is part of the geosphere, becomes dry. When there is not enough water,
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!