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3 years ago

Young animals often learn valuable hunting skills through

Physics

2 answers:

pogonyaev3 years ago

8 0

Young animals often learn valuable hunting skills through playing/wrestling.
Hope it helps!

uysha [10]3 years ago

7 0

They're Farther's, Genes.

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Give reason The SI system of unit is better than the MKS system

egoroff_w [7]

Answer:

The SI was and is intended to extend and refine the definitions used by the MKS.

6 0

3 years ago

You are given a material which produces no initial magnetic field when in free space. When it is placed in a region of uniform m

seropon [69]

Answer:

This material exhibits paramagnetism.

Explanation:

A paramagnetic material has these features: It doesn’t have any magnetic properties when placed in an external magnetic field, it gains and then loses the magnetic property as the external field is removed.

Such materials have magnetic moments oriented in random directions, thus making the net magnetic moment, zero. But when placed in an external field, they do possess a net magnetic moment. When the magnetic field is removed, they lose the magnetic property.

Thus, the material which produces no initial magnetic field when placed in a uniform magnetic field produces an additional internal magnetic field parallel to the original field. Also, it loses the magnetic properties as soon as the external magnetic field is removed. Then, the magnetism the material exhibits is paramagnetic.

7 0

3 years ago

Two cars, one of mass 1300 kg, and the second of mass 2400 kg, are moving at right angles to each other when they collide and st

Margarita [4]

To solve this problem we will apply the momentum conservation theorem, that is, the initial momentum of the bodies must be the same final momentum of the bodies. The value that will be obtained will be a vector value of the final speed of which the magnitude will be found later. Our values are given as,

$m_1 = 1300kg$

$m_2 = 2400kg$

$u_1 = 12m/s i$

$u_2 = 18m/s j$

Using conservation of momentum,

$m_1u_1+m_2u_2 = (m_1+m_2)v_f$

$1300*12i-2400*18j = (1300+2400)v_f$

Solving for $v_f$

$v_f = 4.2162i-11.6756j$

Using the properties of vectors to find the magnitude we have,

$|v| = \sqrt{(4.2162^2)+(-11.6756)^2}$

$|v| = 12.4135m/s$

Therefore the magnitude of the velocity of the wreckage of the two cars immediately after the collision is 12.4135m/s

6 0

3 years ago

A wheel rotates clockwise 10 times per second. what is its angular speed answer

bogdanovich [222]

The frequency of the wheel is the number of revolutions per second:
$f= \frac{N_{rev}}{t}= \frac{10}{1 s}=10 Hz$
And now we can calculate the angular speed, which is given by:
$\omega = 2 \pi f=2 \pi (10 Hz)=62.8 rad/s$ in the clockwise direction.

3 0

3 years ago

6. Do you think that aliens exist?

sergij07 [2.7K]

Yes, I think that the universe is way to large for there not to be other life forms out there.

8 0

2 years ago