3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! I CANNOT RETAKE THIS AND I NEED ALL CORRECT ANSWERS ONLY!!!

Physics

2 answers:

Kryger [21]3 years ago

7 0

Magnets are surrounded by magnetic fields.

Answer: last choice

valina [46]3 years ago

5 0

Magnets are surrounded by a magnetic force

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A centrifuge is used to test space pilots. The centrifuge spins with a centripetal acceleration of 3.04g. If the length of the a

uranmaximum [27]

Answer:

$approx.= 25\frac{m}{s}$

Explanation:

Centripetal acceleration (a) is defined as the square of an object's velocity (V^2) divided by the distance of the object from it's point/axis of revolution (r). So:

$a=\frac{V^{2} }{r}$

which allows us to solve for the velocity:

$V=\sqrt{ar}\\ Since: a=3.04g=(3.04)(9.81),r=21;\\V=\sqrt{(3.04)(9.81)(21)} =25.02...$

3 0

3 years ago

A Martian leaves Mars in a spaceship that is heading to Venus. On the way, the spaceship passes earth with a speed v = 0.80c rel

hjlf

To find the relative distance from one point to another it is necessary to apply the Relativity equations.

Under the concept of relativity the distance measured from a spatial object is given by the equation

$l = l_0 \sqrt{1-\frac{v^2}{c^2}}$

Where

$l_0$ = Relative length

v = Velocity of the spaceship

c = Speed of light

Replacing with our values we have that

$l = l_0 \sqrt{1-\frac{v^2}{c^2}}$

$l = 1.2*10^{11} \sqrt{1-\frac{0.8c^2}{c^2}}$

$l = 1.2*10^{11} \sqrt{1-0.8^2}$

$l = 7.2*10^{10}m$

Therefore the distance between Mars and Venus measured by the Martin is $7.2*10^{10}m$

8 0

2 years ago

vovangra [49]

Can you please post the picture of the graph and i will gladly answers it.

8 0

3 years ago

Read 2 more answers

What is the angle between P×Q and P±Q? 1) 0 2) PIE/2 3) PIE 4) 3PIE/2

faltersainse [42]

Answer:

option 2 is correct

Explanation:

the angle between p*q and p+q is 90 degree which is equal to π/2

it is rule that product of two vectors is always perpendicular to the plane in which both the vector lie

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3 years ago

A spring is stretched from equilibrium to 0.90 m and the work done on the spring equals 18j what is the value of the spring cons

Stels [109]

Work done is given by 1/2kx^2
18 = 1/2*k*0.9*0.9
36 = k*0.81
44.4 = j/m^2

4 0

3 years ago