Cancer causing agents are also called

MAXImum [283]

The answer is B. Comet

6 0

4 years ago

A ball of mass 0.7 kg flies through the air at low speed, so that air resistance is negligible. (a) What is the net force acting

Fed [463]

Answer:

A) Gravitational Force, $F=-6.86N$ .

B) The y component of momentum.

C) The x component of momentum will remain the same.

D)The y component of momentum decreases.

E)The z component of momentum will remain constant.

Explanation:

First, let the x-axis be positive in the same direction as the horizontal speed of the ball, let the y-axis be positive in the opposite direction of gravity.

A) since there is no air resistance, the only force acting on the ball is the gravitational force. This force is downwards so it is negative. The net force is

$F=-9.8*0.7=-6.86N$ .

B)Because the net force (and the only one) is on the y-axis, only the vertical component of the momentum will be changed due to the force.

C)Since there is no resistance of air, the ball behaves as in projectile motion problems, this means that the x component of the velocity remains constant, also does the mass. Remembering that momentum is velocity times mass, it can be easily seen that x component of momentum remains constant too.

D)The y component of momentum decreases, this is because gravity decreases the y component of the velocity.

E)Since there is no z component of the force there is no change in the z component of the momentum.

5 0

3 years ago

An archer wishes to shoot an arrow at a target at eye level a distance of 50.0m away. If the initial speed imparted to the arrow

notka56 [123]

<span>Given:
Hmax (distance) = 50.0m
v</span>₀ = <span>70.0m/s

Required:
what angle should the arrow make with the horizontal as it is being shot

Solution:
Hmax = v</span>₀²sin²θ / 2g
sin²θ = 2gHmax / v₀²
sin²θ = 2 (9.81 m/s²) (50m) / (70 m/s)²
sin²θ = 0.200
θ = 26.56°

5 0

3 years ago

what happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant tempe

Rama09 [41]

The average kinetic energy of the gas would also be constant since the temperature of the gas is not changing.

<h3>What happens to the average kinetic energy?</h3>

The kinetic energy is the energy of the particle that is motion. We know that the kinetic energy of the gas is proportional to the temperature of the gas. As the temperature increases, the kinetic energy of the particles of the gas increases.

Now we can see that the gas has been maintained at a constant temperature and a constant volume and that the particles of the gas collide with each other. This implies that the average kinetic energy of the gas would also be constant since the temperature of the gas is not changing.

Learn more about average kinetic energy:brainly.com/question/1599923

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4 0

2 years ago

Two point charges q1 = 4. 0 µc and q2 = -8. 0 µc are placed along the x-axis at x1 = 0 m and x2 = 0. 20 m, respectively. What is

scoundrel [369]

The electric potential energy of this system of charges will be +1.44 J. Option E is correct.

<h3>What is the electric potential energy ?</h3>

Electric potential energy stands for the energy that is required to displace a charge in against an electric field.

Given data;

q₁ = 4. 0 µc

q₂ = -8. 0 µc

D(distance between charges) = 0.2 m

The electric potential energy is found as;

$\rm E = \frac{Kq_1q_2}{r} \\\\ \rm E = \frac{9 \times 10^9 \times 4 \times 10^{-6}\times (-8.0)\times 10^{-6}}{0.2} \\\\ E=+1.44 J$

The electric potential energy of this system of charges will be +1.44 J.

Hence,option E is correct.

To learn more about the electric potential energy refer:

brainly.com/question/12645463

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5 0

2 years ago