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o-na [289]
3 years ago
7

As the spaceship travels upward in the sky, some of its kinetic energy will be lost to the universe due to ?

Physics
1 answer:
GaryK [48]3 years ago
6 0

Answer:

Friction !!!

Explanation:

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If the range of a projectile's trajectory is ten times larger than the height of the trajectory, then what was the angle of laun
Lunna [17]

Answer:

Angle of projection from the horizontal will be 21.80^{\circ}

Explanation:

We have given that range of the projectile is 10 times the height of the projectile

Let the projectile is projected with velocity u at an angle \Theta

Range of the projectile is equal to R=\frac{u^2sin2\Theta }{g}

And height of the projectile is equal to h=\frac{u^2sin^2\Theta }{2g}

Now according to question range is 10 times of height

So \frac{u^2sin2\Theta }{g}=10\times \frac{u^2sin^2\Theta }{2g}

sin2\Theta =5sin^2\Theta

2sin\Theta cos\Theta =5sin^2\Theta

tan\Theta =\frac{2}{5}=0.4

\Theta =tan^{-1}0.4=21.80^{\circ}

So angle of projection from the horizontal will be 21.80^{\circ}

3 0
3 years ago
When a 4.32 kg object is hung vertically on a certain light spring that obeys Hooke's Law, the spring stretches 2.92 cm.
Alika [10]

(a) 1.01 cm

First of all, we need to find the spring constant of the spring.

The force initially applied to the spring is equal to the weight of the block hanging on it:

F=mg=(4.32)(9.8) = 42.3 N

where m = 4.32 kg is the mass of the block and g = 9.8 m/s^2 is the acceleration of gravity.

When this force is applied, the spring stretches by

x=2.92 cm = 0.0292 m

We can find the spring constant by using Hooke's law:

F=kx

where k is the spring constant. Solving for k,

k=\frac{F}{x}=\frac{42.3}{0.0292}=1448.6 N/m

Later, the first object is removed and another object of mass

m' = 1.50 kg

is hung on the spring. The weight of this object is

F'=m'g=(1.50)(9.8)=14.7 N

So, if we use Hooke's law again, we can find the new stretching of the spring:

x'=\frac{F'}{k}=\frac{14.7}{1448.6}=0.0101 m = 1.01 cm

(b) 1.16 J

The work that must be done on the spring is equal to the elastic potential energy that would be stored in the spring, therefore:

W=\frac{1}{2}kx^2

where we have

k = 1448.6 N/m is the spring constant

x = 4.00 cm = 0.04 m is the new stretching

Solving the equation, we find the work that must be done by the external force:

W=\frac{1}{2}(1448.6)(0.04)^2=1.16 J

6 0
3 years ago
Two electrons are separated by 1.70 nm. What is the magnitude of the electric force each electron exerts on the other?
lidiya [134]

Answer:

F=7.96*10^{-11}N

Explanation:

According to Coulomb's law, the magnitude of the electric force between two equals charges (q) is given by:

F=\frac{kq^2}{d^2}

Here k is the coulomb constant and d is the distance between the charges. For two electrons we have:

F=\frac{ke^2}{d^2}\\F=\frac{8.99*10^{9}\frac{N\cdot m^2}{C^2}(-1.6*10^{-19}C)^2}{(1.7*10^{-9}m)^2}\\F=7.96*10^{-11}N

8 0
3 years ago
What is a dependent or responding variable? Can someone help me?
Svetllana [295]

They are a variable that changes as a result of the changes in the manipulated variable

8 0
3 years ago
Acid rain is an example of which type of chemical weathering?
tino4ka555 [31]
The answer is Carbonic acid
6 0
3 years ago
Read 2 more answers
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