Answer:
I think the answer would be c
Explanation:
A. is not scientific
B. is subjective, so it can't be scientific.
C. can be studied with an experiment
D. relates to regulations, not science
Please help I’ll give brainliest
Answer:
Magnetic Field
Explanation:
can someone please help me with this question thank u
Answer:
C option, when two atoms collide and they explode
Explanation:
Because the kinetic energy they have initially for collision will appear as final kinetic energy of the particles of atom after collision. Hence the kinetic energy is conserved so the collision will be elastic.
Convert 0.4 cm to km.
what is speed of light
[tex] {?} [/tex]
Answer:
[tex]3 \times {10}^{8} m {s}^{ - 1} [/tex]
299 792 458 m / s
Answer:
faster than u
Explanation:
3. What is the frequency of a wave that has a wave speed of 20 m/s and a wavelength of 0.50 m?
Explanation:
everything can be found in the picture
Bruce has a momentum of 430kg m/s and is running at 7.8m/s. What is Bruce's mass?
Answer:
55.128kg
Explanation:
P= m×v
or, m=P/v = 430/7.8 = 55.128 kg
Answer:
55.13 kg
Explanation:
Momentum, P = m*v
P = m*v
m = P/v
m = 430/7.8
m = 55.13 kg
If the object represented by the FBD has a mass of 4.0 kg and is accelerating at 3.0 m/s^2 to the left, what is the values of the unknown force?
Answer:
there u go fella hope u understood
A 2.99 x 10-6 C charge is moving in a
direction 10.0° from the Earth's
magnetic field (5.00 x 10-5 T). If the
force on it is 2.14 x 10-8 N, how fast is
it moving?
[?] m/s
No links please
another answer for acellus is 143 m/s it worked for me
The speed of the charge is approximately 2.857 m/s.
To find the speed of the charge, we can use the formula for the magnetic force on a charged particle moving through a magnetic field:
Force (F) = q * v * B * sin(θ)
Where:
F is the force on the charge (given as 2.14 x [tex]10^-8[/tex] N),
q is the charge of the particle (given as 2.99 x [tex]10^-6[/tex]C),
v is the speed of the charge (what we want to find),
B is the magnitude of the magnetic field (given as 5.00 x [tex]10^-5[/tex] T),
θ is the angle between the direction of motion and the magnetic field (given as 10.0°).
First, we need to convert the angle from degrees to radians:
θ (in radians) = 10.0° * (π / 180°) ≈ 0.174532925 radians
Now, we can rearrange the formula to solve for the speed (v):
v = F / (q * B * sin(θ))
Substitute the given values into the equation:
v = 2.14 x [tex]10^-8[/tex] N / (2.99 x [tex]10^-6[/tex] C * 5.00 x [tex]10^-5[/tex] T * sin(0.174532925))
v ≈ 2.857143 m/s
Therefore, the speed of the charge is approximately 2.857 m/s.
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According to Ohm's law, determine the experimental
current for these values in Table A.
voltage = 5 V, resistance = 20 Q: f
voltage = 20 V, resistance = 20 N:
A
voltage = 50 V, resistance = 20 Q:
A
x A
A
Explanation:
using Ohm's law which is defined as V=IR
where V is the voltage, I is the current and R the resistance
Which of the following are vector quantities?
Check all that apply.
A. Acceleration
B. Energy
C. Distance
D. Force
E. Speed
F. Velocity
G. Time
H. Momentum
Answer:
Vector Quantity: A physical quantity is said to be a vector quantity when it has both magnitude and direction. The scalar quantities are distance, mass, time, volume, density, speed, temperature, and energy, The vector quantities are weight, velocity, acceleration, and force.
Explanation:
Mark me brainleist PLZZZZ
The displacement ‘s' of a point moving in a straight line is given by: s = 6t^2 + 5t – 5, ‘s' being in cm and ‘t' in s. The initial velocity of the particle is:
Answer:
the initial velocity of the particle is 5 cm/s
Explanation:
Given initial displacement as, s = 6t² + 5t - 5
s is measured in "cm"
t is measured in "seconds"
Velocity is the rate of change of displacement with time. Expressed as follows;
[tex]v = \frac{ds}{dt} = 12t + 5[/tex]
for initial velocity, time (t) = 0
v = 12(0) + 5
v = 5 cm/s
Therefore, the initial velocity of the particle is 5 cm/s
A human hair has a thickness of about 70 micrometers. How many meters is
this?
A. 70 x 10-2 m
B. 70 x 10-6 m
C. 70 x 10-3 m
D. 70 x 10-ºm
Answer:
the answer is B. 70 x 10-6 m
Explanation:
i'm doing the test rn
When converting from micrometers to meters, you have to divide the value by 1,000,000
= 70/1000000
= 7 ×10⁻⁵
Hence the thickness of the human hair is in meters is 7×10⁻⁵ m
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Which of the following physical properties makes copper and aluminum
useful for making frying pans?
A. Magnetism
B. Electrical conductivity
C. Density
D. Thermal conductivity
A car is moving eastward and speeding up. The momentum of the car is ______.
a. increasing
b. decreasing
c. remaining constant
Which is the only element in group 1 on the periodic table that forms covalent bonds?
hydrogen
lithium
potassium
sodium
Answer:
HYDROGENExplanation:
Please help!!
What happens to the apparent wavelength in the doppler effect example as the wave source moves forward, towards you?
Answer:
The waves travel at the same speed, but the observed frequency depends on any relative motion between the observer and source. When the observed frequency changes, so does the wavelength. If the observer and source are moving toward each other, then the frequency increases and the wavelength decreases
Explanation:
Hope it helps.
Three balls with different masses are shown below.
(picture of beach ball) - 85g
(picture of football) 425g
(picture of baseball) - 149g
If the same amount of kicking force is applied to each ball, which will travel the farthest?
F - They will all travel the same distance because the applied force is the same
G - the baseball because it's the smallest
H - The football because it has the highest mass and was designed for kicking
J - the beach ball because it has the lowest mass
(btw it's a football, not soccer ball)
Answer:
$10 a g
Explanation:
Answer:
As The mass of the beach ball is having lowest magnitude when compared with the other balls given so when apply the same magnitude of force to all the balls then the beach ball due to its lighternessand also its inertia of rest would not resist the force so much so when you apply the force to this ball it would starts to roll and covers the maximum diatance whwn compared with the other ball only in the condition when same magnitude of force applied.Thats this ball would do more work than the other ball.The mass also influences the velocity carried by the body and also the kinetic energy possessed by the body. More the force applied more the distance it would cover
Hope it helps
Which symbol represents a type of radiation that has the same mass as an
electron and a positive charge?
Answer:
the answer is D
as an electron is composed of positive charges
Answer:
D.+1°e symbol represents a type of radiation that has the same mass as an electron and a positive charge.
Explanation:
it is 100% correct!
Matthew was bowling. He bowled with a 12 pound ball at first then used a 10 pound ball. If matthew uses the same amount of force to roll the bowling balls, which one would roll faster?
F- the 12 pound ball
G - they would roll the exact same speed
H - the 10 pound ball
J - none of the above
Answer:
Rotational inertia depends both on an object's mass and how the mass is distributed relative to the axis of rotation. ... We can't just consider the mass to be concentrated at its center of mass. When a mass moves further from the axis of rotation it becomes more difficult to change the rotational velocity of the system.So the ball with 10 pounds of the ball can have more probability to do an absolute pure rotation along rolling translation.And also the specific material from which it is made up of. As If the body is rigid have the points dont move from their position when a magnitude of force applied then the body woukd perform a well rotation than a resistantant body.
Hope it helps
Help please!-
A stereo speaker has a resistance of 8I© and has a power draw of 32W. How much current is going through the speaker?
Answer:
Current = 2 Amperes
Explanation:
Given the following data;
Resistance = 8 Ohms
Power = 32 W
To find the amount of current going through the speaker;
Mathematically, power can be calculated using the formula;
Power = current² * resistance
Substituting into the formula, we have;
32 = current² * 8
Current² = 32/8
Current² = 4
Taking the square root of both sides, we have;
Current = √4
Current = 2 Amperes
Please hurry and help ASAP
At what point does the roller coaster have the most potential energy?
Answer:
Gravitational POTENTIAL ENERGY is greatest at the highest point of a roller coaster.
Explanation:
hope this helps
have a great day/night :)
What type of glass absorbs light and does not allow light to pass through it?
reflective
transparent
opaque
refractive
opaque glass does not allow light to pass through it.
What are action and reaction forces, and how do they impact an object's motion?
Action-reaction forces are equal and opposite forces that act on different objects, so they don't cancel out. In fact, they often result in motion. Think about Jerod again. He applies force with his foot to the ground, whereas the ground applies force to Jerod and the skateboard, causing them to move forward.
Hope this helps =)
What is the power of a snowplow moving a snow pile 18 meters with 800 N of force in 15 seconds?(Hint; two part question )
Answer:
960 W
Explanation:
F = 800 N
x = 18 m
t = 15 s
Work = Fx= (800 N)(18 m) = 14,400 J
Power = Work / time = (14,400 J) / (15 s) = 960 W
What is the mass of a ball rolling at 5.00m/s if it has 3.00J of kinetic energy?
Answer:
Explanation:
The equation for Kinetic Energy is
[tex]KE=\frac{1}{2}mv^2[/tex] and we know everything but the mass of this ball. Filling in:
[tex]3.00=\frac{1}{2}m(5.00)^2[/tex]. Get everything isolated from the :
[tex]m=\frac{2(3.00)}{(5.00)^2}[/tex] which tells us that we need 3 significant digits in our answer.
m = .240 kg since mass is always in kg i the velocity is in meters/sec
If the current in the circuit is 10.5 A,
what is the potential difference across the
source?
(AI 0.750 V
(B) 9.19 V
(C) 12.0 V
(D) 49.0 V
(E) 147 V
Answer:
E) 147 V
Explanation:
Ra+Rb+Rc = 14.0
V = IR
V = (10.5)(14.0)
V = 147 V
The potential difference across the source will be c)12V
What is Ohm's law ?Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points .
since , R(A) , R(B) AND R(C) are in parallel combination , hence equivalent
resistance of the circuit will be
1/R = 1/R(A) + 1/ R(B) + 1/ R(C)
1/R= 1/2 + 1/4 +1/8
1/R = 7/8
R = 8/7 ohm
from ohm's law
Voltage = current * resistance
V( source ) = current (in circuit ) * R (equivalent resistance)
V = 10.5 * (8/7)
V = 12 V
The potential difference across the source will be c) 12V
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What is the time it takes a tow truck to pull a car if it has 1,850,000J of work and 370,000 Watts of power ?
P = W / t
370,000 = 1,850,000 / t
t = 1,850,000 / 370,000
t = 185 / 37
t = 5 seconds
explain why temperature first increases, then begins to decrease throughout the day
Answer:
As you increase in elevation, there is less air above you thus the pressure decreases. As the pressure decreases, air molecules spread out further (i.e. air expands) and the temperature decreases.
A loaded spring launches a 2.50 kg block, using a force of 450 N. If the change in
momentum is 12.0 kg*m/s, how long was the block in contact with the spring?
Answer:
37.5 seconds
Explanation:
The given parameters are;
The mass of the block on the spring, m = 2.50 kg
The force with which the loaded spring launches the block, F = 450 N
The change in momentum of the block, Δp = 12.0 kg·m/s
We have;
Let the force with which the block was launched = The net force, [tex]F_{NET}[/tex]
By Newton's second law of motion, we have;
F = [tex]F_{NET}[/tex] = Δp × Δt
Where;
Δt = The time the block is in contact with the spring
Therefore;
[tex]\Delta t = \dfrac{F_{NET}}{\Delta p}[/tex]
By plugging in the values for [tex]F_{NET}[/tex] and Δp, we have;
[tex]\Delta t = \dfrac{450 \ N}{12.0 \ kg \cdot m/s} = 37.5 \ s[/tex]
The time duration the block is in contact with the spring, Δt = 37.5 seconds.
