mohamedkhaledshehaby

Find the surface area of the composite figure. 

Can you find a vector quantity that has a magnitude of zero but components that are 
different from zero? Explain. Can the magnitude of a vector be less than the magnitude 
of any of its components? Explain. 

Find the area of the specified region

Inside one leaf of the four leaved rose r= 5sin2(theta)

Using the net below, find the surface area of the rectangular prism.

How to improve the pronunciation?

Can you recommend me some interesting movies to learn English?

A man pushes a 9 kg box across a level floor for 20 seconds. The box is initially at rest and has an acceleration of 0.1m/s.

If the coefficient of friction between the box and the floor is 0.5, determine

(a) the amount of work done by the man 

(b) the power output of the man

(g=9.8m/s)

A 5 kilogram object is thrown vertically upwards with an initial velocity of 25 metres per second from the top of a building 30 metres high. On the way down, the object just misses the edge of the building and strikes the ground. Use the law of conservation of energy to determine the

(a) maximum height above the ground reached by the object, and 

(b) object’s speed just before it strikes the ground. [g= 9.8m/s] 

A 7 kg box is initially at the top of a plane inclined at 20 degrees to the horizontal. The box is given a slight push to start it moving down the plane with a velocity of 3 m/s . The coefficient of kinetic friction between the box and the incline is 0.3. The box slides to the bottom of the incline, which is 8 metres long.

(a) Calculate the initial potential energy of the box. 

(b) Determine the work done by friction 

(c) Use the work-energy principle to determine the velocity of the box at the bottom of the incline. 

[g=9.8m/s]

what is the domain of f(x)=sin (x)?

Which statement BEST describes the meter?

Read the poem excerpt.

As every eye awaits her hand. To cue the members of the band.

Which statement best describes the meter?

⚪ The meter is free, imitating the flow of conversational speech.

⚪ The meter is free making the poem unpredictable.

⚪ The meter is fixed, and every syllable is stressed.

⚪ The meter is fixed, drawing attention to the end rhyme.

Is silver bromide a "polar covalent bond with a strong ionic character?" If so, how? If not, what is the polarity of silver bromide and what is its bond type? How does it dissolve in water as a slightly soluble salt?

A object is initially moving along a straight line with a velocity of 300 metres

per second and accelerates at 10 metres per second squared for 90 seconds. Calculate

(a) the final velocity 

(b) the total distance the object travels.

give an example in which velocity is zero yet acceleration is not.

1. Can you Give examples of motion in which the directions of the velocity and acceleration vectors 
   are  opposite,  the same, and mutually perpendicular.

The equation of motion of a particle is given by  

Find the acceleration of the particle at t=2s? does the acceleration of the particle constant?

The resistor of a thermistor over a limited range of temperature is given by the equation R=(c/T-203)where c is a constant and T is the absolute temperature.what will be the temperature on the celsius scale of the thermistor at absolute temperature of T=300K

what is the definition of electric potential?

What is electricity ?

is three pin plug,earth pin  consume more energy and causing more electricity bill?

Write a note on hystersis loss with headings and figures. Kindly it should be without plagiarism.