Answer:
D)
Explanation:
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The product of the component of a force along the direction of displacement and the magnitude of the displacement are known as:
a.
net force
c.
velocity
b.
work
d.
power
Answer:
a
Explanation:
thats yes according to kinematics
A car is moving at 11m/s and has a mass of 1200 kg. What is the momentum of her car?
(no links please!)
Answer:
momentum= mass x velocity
= 11 x 1200 =13200kgm/s
Which happens when sound waves enter a vacuum?
A. They are reflected.
B. They move slower
C. They move faster
D. They stop moving
Which statement correctly describes these electric field lines
Answer:
ok
Explanation:
the correct answer is C please follow me
A particle with an electric charge of 2*10-3^C is a distance of 5 m from a particle with a charge of 8*10-5 C . What is the strength of the electrostatic force between the two particles?
Answer:
F= K q1q2/r^2
K is a constant uqual to= 9 x 10^9 N m^2 C^-2
F= 9 x 10^9 x 2 x 10^-3 x 8 x 10^-5/25
F= 1440/25= 58N
Delilah does 170 Joules of work in 30 seconds. Adam does 260 Joules of work in 20 seconds. Who was more powerful?
Power = [tex]\frac{Work}{Time}[/tex]
Delilah: 170J/30s = 5.66 W
Adam: 260J/20s = 13 W
Miles Tugo is camping in Glacier Canyon and he makes a loud holler. The sound bounces off the nearest canyon wall (which is located 170 meters away from Miles) and returns to Miles.
Determine the time elapsed between when Miles makes the holler and the echo is heard.
Answer:
It would take 1 s to hear the echo.
Explanation:
Here, the sound covered a total of 340 meters, since it bounces off the canyon wall and travels back to Miles in the form of echo.
The time elapsed can be determined by,
v = [tex]\frac{2D}{t}[/tex]
⇒ t = [tex]\frac{2D}{v}[/tex]
where: v is the speed of sound in air (343 m/s), D is the distance of the nearest canyon (170 m).
So that,
2D = 2 x 170 = 340 m
Thus,
t = [tex]\frac{340}{343}[/tex]
= 0.9913 s
t = 1 s
It takes 1s for Miles to hear his echo.
What is the kinetic energy of a 25 kg object moving at a velocity of 4 m/s?
Thus Kinetic energy of the object is 200J when mass is 25 kg and velocity is 4 m/s.
what is specific heat capacity?
Specific heat capacity is defined as the amount of heat required to raise the temperature of 1 kilogram of a substance by 1 kelvin (SI unit of specific heat capacity J kg−1 K−1). From: Basic Physics and Measurement in Anaesthesia (Fourth Edition), 1995.
Help what is the answer pls
What is the momentum of a 4000g object moving to the left (negative direction) at 25 m/s?
Answer:
-100 kg · m/s
Explanation:
We can find the momentum of an object using the formula:
p = mv where p = momentum (kg * m/s), m = mass (kg), v = velocity (m/s), and p and v are vectorsLet's start by converting the mass of the object to kilograms.
4000 g → 4 kgSince the left direction is the negative direction, we know that the velocity of the object is -25 m/s.
Using these variables, we can solve for p in the formula.
p = mv p = (4 kg)(-25 m/s) p = -100 kg · m/sThe momentum of the object is -100 kg · m/s.
If C is the vector sum of A and B, C = A + B, What must be true if C = A + B?. What must be true if C = 0?.
formula of average speed
Answer:
Hey mate....
Explanation:
This is ur answer.....
Hope it helps!
Mark me brainliest....
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2. How does laser light differ from
normal light?
Answer:
Laser light differs from normal light because laser lights are monochromatic which means it only shines one color and only that color :3
Explanation:
:3
How many oxygen (O) atoms are in a molecule of SiO2?
O A. 1
OB. 3
C. 4
D. 2
Water uptake to the atmosphere occurs through the processes of evaporation and transpiration from plants where it condenses to form clouds. Clouds release the water through precipitation. During a summer of extreme drought, what can we expect to happen to the surface groundwater stored in ponds and lakes?
a. Water levels will increase because there is more precipitation
b. Animals won't drink as much to save water, so water levels remain the same
c. Water levels will increase because there are more evaporation and transpiration
d. Water levels will decrease because there are more evaporation and transpiration
water level will decrease because there are more evaporation and transpiration
Why are temperatures of the currents generally colder at the poles than the equator?
A. Tilt of the Earth on its axis
B. Angle of the sun's rays are less direct
C. Angle of the sun's rays are more direct
D. The Earth's revolution around the sun.
Answer:
the answer is A
Explanation:
M= 1000 g g= 10 m/s2 h= 10 K.E at GROUND = 400 j M.E = ....... ........J the answer is 400 so plz explain how
Answer:
M = 500 J
Explanation:
Given that,
Mass, M = 1000 g = 1 kg
Height, h = 10 m
Potential energy is given by :
P = mgh
P = 1×10×10
P = 100 J
The kinetic energy at ground = 400 J
Mechanical energy = sum of kinetic and potential energy
So,
M = 100 + 400
M = 500 J
So, the mechanical energy of the system is 500 J.
The parking brake on a 1200kg automobile has broken, and the vehicle has reached a momentum of 7800kg.M/s. What is the velocity of the vehicle?
An object of mass 150 kg accelerates from a velocity of 5m/s to a velocity of 10m/s in the same direction. What is the impulse provided to cause this acceleration?
Answer:
If it accelerated from 5 to 10 in one second then we know that acceleration is final (velocity-initial velocity)/
time
this gives (10-5)/1
=5m/s^2
force = mass x acceleration so = 150 x 5
this gives us a force of 750N
impulse is force x time so = 750 x 1
this tells us the impulse is 750 N.s
All of this is assuming it accelerated to 10m/s in one second.
The definition of impulse allows to find the impulse response for the acceleration of the body is:
The impluse in acceleration direction is: I = 750 N s
Given parameters
Body mass m 150 kg The initial velocity vo = 5 m / s The final velocity vf = 10 m / sTo find
Impulse
The impulse is the change of the momentum of a body, it is a vector quantity
I = ∫ F. dt = Δp
Where the bold indicate vectors, I is the momentum, F the force, t the time, Δp the change in moment
The momentum is defined as the product of the mass of the body and its speed.
p = m v
We substitute in the expression of impulse
I = [tex]m v_f - m v_o[/tex]
Let's calculate.
I = 150 (10 -5)
I = 750 N s
In the direction of acceleration.
In conclusion using the definite of impulse we can find the impulse response for the acceleration of the body is:
The impluse in acceleration direction is: I = 750 N s
Learn more here: brainly.com/question/15652768
The two forces are trying to make the cyclist slow down. They are _________ and _________ .
Answer:
Friction and gravity?
Explanation:
i dont know the possible answers but that's how physics so good luck.
What acceleration would be achieved by a 5N thrust motor in a 0.30kg
Answer:
F=ma
5N=0.3a
a=5/0.3=16.66m/s²
PLEASE GIVE BRAINLIEST
Answer:
16.7
Explanation:
acceleration=force/mass
What acceleration can a 1-newton force give to a 1-kilogram object?
Answer: 1 m/s/s
Explanation: One Newton is defined as the amount of force required to give a 1-kg mass an acceleration of 1 m/s/s.
DO NOW: You are picking up a pendulum (Clay ball on a string) as you pull the pendulum up on one side and let it fall, what types of energy are being used?
Answer:
The energy used in the pendulum is the initial Potential (Mechanical) Energy, P.E. given to the Clay ball attached to the inclined and extended string by virtue of its elevated position in relation to the rest position (lower state)
The swinging of the pendulum is brought about by the dynamic equilibrium between the initial potential energy, P.E. and the Kinetic Energy, K.E., of the pendulum when it is in motion
The (total) Mechanical Energy, M.E. of the ideal pendulum is constant at all times during the motion of the pendulum and it is given by the following formula;
M.E. = P.E. + K.E.
At the top of the swing, P.E. is maximum and K.E. is zero
Similarly, at the mid (lowest) point in the swing, instantaneously, P.E. is zero and K.E. is maximum
Explanation:
How do you find component velocities of parallel vectors?
Answer:
Velocity is a vector (it has magnitude and direction), so the overall velocity of an object can be found with vector addition of the x and y components: v2 = vx2 + vy2. The units to express the horizontal and vertical distances are meters (m).
One of the solid reactants was treated in a coffee grinder before adding to
the reaction container. *
O
A. Concentration
B. Temperature
C. Surface Area
D. Catalyst
E. Agitation
Answer:
C. Surface area
Explanation:
The rate of chemical reaction depends on various factors such as:
concentration and pressurenature of reactantstemperaturesurface areapresence of catalyst, etc.Effect of surface area of reactants: the rate of a chemical reaction can be increased by increasing the the area of contact of the reacting substances. This is especially important when one or more of the reactants are solids., because only the particles of the solid that are exposed are able to take part in the reaction at each instant of time. Therefore, the greater the surface area of the solid reactant particles the faster the reaction.
The surface area of solid reactants can be increased by grinding or pelletizing, thus allowing for a greater contact between the reacting particles,
The instance in which one of the solid reactants was treated in a coffee grinder before adding to the reaction container is one way of increasing the surface area of a reactant.
Which would increase the speed of a sound wave?
Answer:
I would say temperature
A healthy breakfast should include foods from the Grains group, the Vegetables OR Fruits group, and the Dairy OR the Protein group. * O True O False
Answer:
vry true
Explanation:
yes because ll thoes give you protien sorry for my bad spelling
Answer:
True
I Had this before
When a hot object makes a cold object warmer what is it called