Questions
How far does the pendulum bob (the ball at the end of the rope) travel in one complete cycle of motion if its length is 32.7 cm?

A pendulum (shown in the figure) sweeps out an angle of 22.7° during its motion. How far does the pendulum bob (the ball at the end of the rope) travel in one complete cycle of motion if its length is 32.7 cm?

 

In: Physics

Find the time th it takes the projectile to reach its maximum height H. Express th in terms of v0, theta, and g (the magnitude of the acceleration due to gravity).

Find the time th it takes the projectile to reach its maximum height H. Express th in terms of v0, theta, and g (the magnitude of the acceleration due to gravity). Find tR, the time at which the projectile hits the ground after having traveled through a horizontal distance R. Express the time in terms of v0, theta, and g. Find H, the maximum height attained by the projectile. Express the time in terms of v0, theta, and g. Find the total distance R (often called the range) traveled in the x direction; see the figure in the problem introduction.

 

In: Physics

Role of HCL and Liver in our body

Hydrochloric acid in the stomach is secreted by the gastric glands present in its wall.

 

The liver is the largest and major digestive gland of humans

In: Biology

Nutrition in Humans

There are five stages in human nutrition; Ingestion, Digestion, Absorption, Assimilation and Egestion.

In: Biology

Nuitrion in Amoeba and Paramoecium

Explain the nutrition in Amoeba and Paramoecium is both exhibit holozoic nutrition 

In: Biology

Briefly explain the female reproductive system

Female reproductive system

The human female reproductive system consists of a pair of ovaries, a pair of fallopian tubes/oviducts and the accessory organs such as the uterus and the vagina.

In: Biology

Briefly explain the male reproductive system

Male reproductive system

The main reproductive organ in males is a pair of testes.

In: Biology

Explain the process of Haemodialysis

Haemodialysis

When the kidneys fail, it results in a lot of complications and to compensate this situation a technology called dialysis has been developed.

In: Biology

Briefly explain the excretory system of human beings

Excretory System of Humans

The excretory system in humans includes

a pair of kidneys,

a pair of ureters,

a urinary bladder and

urethra.

In: Biology

You begin sliding down a 15 ski slope. Ignoring friction and air resistance, how fast will you be moving after 10?

You begin sliding down a 15 ski slope. Ignoring friction and air resistance, how fast will you be moving after 10?

 

In: Physics

An electric eel develops a potential difference of 500 V, driving a current of 0.90 A for a 1.0 ms pulse.

An electric eel develops a potential difference of 500 V, driving a current of 0.90 A for a 1.0 ms pulse.
A.Find the power of this pulse.
B. Find the total energy of this pulse.
C.Find the total charge that flows during the pulse.

In: Physics

A 85 W electric blanket runs at 24 V .

A 85 W electric blanket runs at 24 V .

What is the resistance of the wire in the blanket?
How much current does the wire carry?

 

In: Physics

A cell membrane has a resistance and a capacitance and thus a characteristic time constant.

What is the time constant of a 9.0-nm-thick membrane surrounding a 0.040-mm-diameter spherical cell? Assume the resistivity of the cell membrane as 3.6×107 ??m and the dielectric constant is approximately 9.0.

 

In: Physics

A person will feel a shock when a current of greater than approximately 100 μA flows between his index finger and thumb.

A person will feel a shock when a current of greater than approximately 100 μA flows between his index finger and thumb.

If the resistance of dry skin is 200 times larger than the resistance of wet skin, how do the maximum voltages without shock compare in each scenario?

A The voltage on dry skin needs to be 200 times smaller than the voltage on wet skin.
B The voltage on dry skin needs to be 200 times larger than the voltage on wet skin.
C The voltage on dry skin is the same as the voltage on wet skin.
D The voltage on dry skin needs to be 40,000 times larger than the voltage on wet skin.

In: Physics

Northeastern Company needs 1.000 motors in its manufacture of automobiles It can

Northeastern Company needs 1.000 motors in its manufacture of automobiles It can buy the motors from ve Motors for $1 200 ach Nertheastes plant can manulacre the ts for the owing c perun Direct materials $ 500 Direct manufacturing labor Varlable manufacturing overhead Fired manufacturing overhead Total 250 250 250 $1.350 If Northeasten buys the motors from Jive, 70% of the fixed manufacturing overhead will s be incumed folows your advice Should the company make or buy the motors? How much will Nertheastem save if OA buy, save $150.000 OB. buy, save $45.000 OC make save $140.000 O D. make save $95.000

In: Accounting