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3 years ago

6

the saclike structure that surrounds the glomerulus is the. a. renal pelvis b. calyx c. bowman’s capsule d. cortex e. none of th

e above

1 answer:

Irina18 [472]3 years ago

3 0

i believe that it is the bowman capsule

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Which statements about braking a car are true? A)The greater the kinetic energy of a car, the longer it takes for the car to sto

NikAS [45]

Answer:

option c

Explanation:

Kinetic energy is due to the speed of a body.

$K.E = \frac{1}{2}mv^2$

When speed is doubled, the kinetic energy is quadruple.

From third equation of motion, braking distance is also proportional to square of speed. Thus, when speed is doubled, the braking distance is quadruple.

Thus, option c is correct.

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3 years ago

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3 years ago

In cats, short hair is dominant and long hair is recessive. If a cat has the genotype of hh, what type of hair will it have?

raketka [301]

Answer:

long hair

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3 years ago

Which of the following statements about current are true? (i) In metal wires,it is the negative charges (Le, the electrons) that

IRINA_888 [86]

Answer:

d. All three statements are true.

Explanation:

In the metals the electrons are the charge carriers and they are the only mobile charges causing the flow of current when subjected to potential difference.

The electrons being negatively lead to the flow of current in opposite direction. The direction of the current is opposite to the direction of the negative charges.

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4 years ago

In a charming 19th-century hotel, an old-style elevator is connected to a counterweight by a cable that passes over a rotating d

melisa1 [442]

Answer:

2.38732 rpm

1.22625 rad/s²

163.292°

Explanation:

g = Acceleration due to gravity = 9.81 m/s²

a = Acceleration = $\frac{1}{8}g$

d = Diameter of wheel = 2 m

r = Radius of wheel = $\frac{d}{2}=\frac{2}{2}=1\ m$

v = Speed of elevator = 25 cm/s

Angular speed is given by

$\omega=\frac{v}{r}\\\Rightarrow \omega=\frac{0.25}{1}\\\Rightarrow \omega=0.25\ rad/s=0.25\times \frac{60}{2\pi}\\\Rightarrow \omega=2.38732\ rpm$

The angular speed of the wheel is 2.38732 rpm

Angular acceleration is given by

$\alpha=\frac{a}{r}\\\Rightarrow \alpha=\frac{\frac{1}{8}g}{r}\\\Rightarrow \alpha=\frac{\frac{1}{8}\times 9.81}{1}\\\Rightarrow \alpha=1.22625\ rad/s^2$

The angular acceleration of the wheel is 1.22625 rad/s²

Angular displacement is given by

$\theta=\frac{s}{r}\\\Rightarrow \theta=\frac{2.85}{1}\\\Rightarrow \theta=2.85\ rad=2.85\times \frac{360}{2\pi}\\ =163.292\ ^{\circ}$

The angle the disk turned when it has raised the elevator is 163.292°

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3 years ago