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Kay [80]
4 years ago
7

Young animals often learn valuable hunting skills through

Physics
2 answers:
pogonyaev4 years ago
8 0
Young animals often learn valuable hunting skills through playing/wrestling.
Hope it helps!
uysha [10]4 years ago
7 0
They're Farther's, Genes.
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Plane polarized light with intensity I0 is incident on a polarizer. What angle should the principle axis make with respenct to t
Nataliya [291]

Answer:

 Q = 47.06 degrees

Explanation:

Given:

- The transmitted intensity I = 0.464 I_o

- Incident Intensity I = I_o

Find:

What angle should the principle axis make with respect to the incident polarization

Solution:

- The relation of transmitted Intensity I to to the incident intensity I_o on a plane paper with its principle axis is given by:

                                     I = I_o * cos^2 (Q)

- Where Q is the angle between the Incident polarized Light and its angle with the principle axis. Hence, Using the relation given above:

                                     Q = cos ^-1 (sqrt (I / I_o))

- Plug the values in:

                                     Q = cos^-1 ( sqrt (0.464))

                                     Q = cos^-1 (0.6811754546)

                                     Q = 47.06 degrees

                                   

8 0
4 years ago
A pulley with the radius of 10.0 cm was connected to a motor with a massless
kogti [31]

Answer:

(i) -556 rad/s²

(ii) 17900 revolutions

(iii) 11250 meters

(iv) -55.6 m/s²

(v) 18 seconds

Explanation:

(i) Angular acceleration is change in angular velocity over time.

α = (ω − ω₀) / t

α = (10000 − 15000) / 9

α ≈ -556 rad/s²

(ii) Constant acceleration equation:

θ = θ₀ + ω₀ t + ½ αt²

θ = 0 + (15000) (9) + ½ (-556) (9)²

θ = 112500 radians

θ ≈ 17900 revolutions

(iii) Linear displacement equals radius times angular displacement:

s = rθ

s = (0.100 m) (112500 radians)

s = 11250 meters

(iv) Linear acceleration equals radius times angular acceleration:

a = rα

a = (0.100 m) (-556 rad/s²)

a = -55.6 m/s²

(v) Angular acceleration is change in angular velocity over time.

α = (ω − ω₀) / t

-556 = (0 − 15000) / t

t = 27

t − 9 = 18 seconds

8 0
3 years ago
Calculate the inductance of a solenoid that is 1.7 cm long and 3.3 mm in diameter, with 195 turns of wire.
jeka57 [31]
The answer is 
3.37e-2 

5 0
3 years ago
"how long would it take for a ball dropped from the top of a 400-foot building to hit the ground? round your answer to two decim
Lelechka [254]
Hello

Let's convert first the height from foot to meters:
S=400~ft=121.92~m
This is the space covered by the ball in its accelerated motion, where the acceleration is the gravitational acceleration:
a=g=9.81~m/s^2
The law of motion is given by
S= \frac{1}{2}at^2
Re-arranging, we can get the total time of the motion:
t= \sqrt{ \frac{2S}{a} }=4.99~s

which is the time the ball takes to hit the ground.
7 0
3 years ago
Read 2 more answers
A student fires a cannonball diagonally
rodikova [14]

Answer:The cannons total flight time is 2.23seconds

Explanation:

A ball fired diagonally is fired at an angle of 45° to the horizontal. The motion of the fired ball is a projectile motion. A projectile is a motion in which an object fired into space with an initial velocity U is allowed to fall freely under the influence of gravitational force.

To total time of flight T of the cannon ball can be expressed as;

T = 2Usin(theta)/g where;

U is the initial velocity or speed of the ball = 31m/s

theta is the angle that the ball make with the horizontal = 45°

g is the acceleration due to gravity = 9.81m/s²

Substituting the given datas into the formula we have;

T = 31sin45°/9.81

T = 31×0.7071/9.81

T = 21.92/9.81

T = 2.23seconds

8 0
3 years ago
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