All categories

3 years ago

The human body contains many examples of levers true or false

1 answer:

3 0

True : There are numerous third-class levers in the human body; one example can be illustrated in the elbow joint

You might be interested in

Spymaster Paul, flying a constant 215km/h horizontally in a low-flying helicopter, want to drop secret documents into his contac

aleksandrvk [35]

Answer:

$\theta = 49.56 degree$

Explanation:

Relative horizontal velocity of plane with respect to the car is given as

$v_r = v_p - v_c$

so we have

$v_p = 215 km/h$

$v_c = 155 km/h$

now we have

$v_r = 215 - 155$

$v_r = 60 km/h$

$v_r = 16.67 m/s$

Now time taken by the object to drop the vertical height is given as

$y = \frac{1}{2}gt^2$

$78 = \frac{1}{2}(9.81)t^2$

$t = 3.98 s$

so the distance of the car must be

$d = v_r\times t$

$d = 16.67 \times 3.98$

$d = 66.47 m$

Angle of the car with horizontal is given as

$tan\theta = \frac{y}{x}$

$tan\theta = \frac{78}{66.47}$

$\theta = tan^{-1}(1.17)$

$\theta = 49.56 degree$

5 0

3 years ago

A rectangular block has the density of 350g/cm3 the dimensions are 3.5 6.cm 2.5

LekaFEV [45]

Answer:

18375g

Explanation:

$\boxed{density = \frac{mass}{volume} }$

$∴ mass = density \times volume$

Let's find the volume of the rectangular block.

Volume

= length ×breadth ×height

= 3.5 ×6 ×2.5

= 52.5cm³

Mass of the block

= 350(52.5)

= 18375g

7 0

2 years ago

Which statement about homeostasis is true?

Debora [2.8K]

Answer: Homeostasis helps to maintain body equilibrium.

Explanation:

Homeostasis is defined as the maintenance of a fairly constant internal environment in an organism. Body fluids such as blood, lymph, and tissue fluids make up the internal environment of the body, hence by the action of the nervous and endocrine system, there levels are maintained at a body equilibrium, by the help of brain, which has overall control of homeostasis while other parts such as kidney, liver, skin, hormones are also involved.

3 0

3 years ago

Decribir los tejidos que forman en triceps, gluteo, deltroides.

Genrish500 [490]

Answer:The deltoid is a muscle in the shoulder It has the shape of a hollow semi-cone

Explanation:

7 0

2 years ago

What is measurement?

gayaneshka [121]

Measurement means weight, size, length, or capacity of something.

4 0

3 years ago

Read 2 more answers