First convert the speed of mosquito to m/s:
So the mosquito is flying at (2,400/3,600) m/s,
or ⅔ m/s.
<span>
Since you are moving at 2m/s, so this makes the closing
velocity between you and the mosquito to be 2⅔ m/s. </span>
Therefore the mosquito will hit your sunglasses at:<span>
35 m / (2⅔ m/s) = 13⅛ seconds.
2.0 m/s * 13⅛ s = 26¼ m from your initial position.
<span>⅔ m/s * 13⅛ s = 8¾ m from the mosquito's initial position. </span></span>
Answer:
r = 0.5297 m
Explanation:
In this exercise we use Newton's second law where the force is magnetic
F = ma
centripetal acceleration
a = v² / r
F = q v x B = q v B sin θ
where the angle between the velocity and the magnetic field is 90º, therefore the sin 90 = 1
we substitute
q v B= m v² / r
r =
the mass of each isotope is
12C
m12 = 6 m_proton + 6 m_neutrons
m12 = (6 1,673 +6 1,675) 10⁻²⁷
m12 = 20.088 10-27 kg
14C
m14 = 6 m_proton + 8 m_neutron
m14 = (6 1,673 + 8 1,675) 10-27
m14 = 23,438 10⁻²⁷ kg
in the exercise they indicate that the velocity of the two particles is the same, therefore with the initial data we can calculate the parameters that do not change in the experiment.
v / qB = 0.454 / 20.088 10⁻²⁷
v / qb = 2.26 10²⁵
this quantity remains constant, let's use the other data to calculate the radius
r = 23.438 10⁻²⁷ 2.26 10²⁵
r = 5.297 10⁻¹ m
r = 0.5297 m
Answer:
Option A, C and D are correct statements.
Explanation:
Torque is the twisting effect of a force which causes an object to acquire angular acceleration.
The direction of the torque depends on the direction of the force on the axis. The SI unit for torque is the Newton-meter.
The net torque is the sum of the individual torques.
If the net torque on a rotatable object is zero then:
1. It will be in rotational equilibrium and the angular velocity of the body remains constant.
2. It will be in rotational equilibrium and not able to acquire angular acceleration. Thus, it will not be able to acquire angular velocity.
3. Angular momentum will be conserved.
If the forces on an object are balanced, the net force is zero.
If there net force on an object is zero, its speed and direction of motion do not change, including if it is at rest, the object will not accelerate and the velocity will remain constant.
Answer:
The mass will be 227kg.
Explanation:
Mass is a measure of how much "stuff" is in an object. It's a measure of the number and type of atoms in something, and is fixed. If you and I went to the moon right now, our bodies wouldn't change what they were made of. I would still be made up of all the same "stuff," as would you! So my mass would be the same and so would yours.
Weight would change on the moon, because weight is a measure of the local pull of gravity on an object's mass. Earth's gravitational force is about 10m/s2 and the moon's is about 1.6m/s2. So on the moon, I would have a weight of about 1/6 my weight on Earth... but I'd still wear the same size jeans!
C. 7
The mass number of this atom is the number of protons and the number of neutrons combined, which in this case would be 3+4 or 7.
Hope this helps.