Answer:
75 miles an hour
I hope this is correct and helps
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Answer:
The mechanism that drives plate tectonics is the heat and gravity that are fundamental to the process Lithospheric plates are part of a planetary scale thermal convection system. The energy source for plate tectonics is Earth’s internal heat while the forces moving the plates are the “ridge push” and “slab pull” gravity forces.
And the one explanation for the movement of the Earth’s crustal plates is believed to be convection currents which occur in the semi-molten mantle. These convection currents are created by heat from within the earth – much of which is generated by radioactive decay in the core. Convection currents in the mantle.
Explanation:
Question 6 (10 points)
The Washington Monument in our nation's capital is 555 ft high. Neglecting the effects of air resistance, what would be the
speed of the penny as it "hit" the ground?
оа
Ob
Oc
Od
48.3 m/s
-68.4 m/s
84.7 m/s
-57.6 m/s
Answer:
a= g = - 9.81 m/s2.
The following equations will be helpful:
a = (vf - vo)/t d = vot + 1/2 at2 vf2 = vo2 + 2ad
When you substitute the specific acceleration due to gravity (g), the equations are as follows:
g = (vf - vo)/t d = vot + 1/2 gt2 vf2 = vo2 + 2gd
If the object is dropped from rest, the initial velocity ("vi") is zero. This further simplifies the equations to these:
g = vf /t d = 1/2 gt2 vf2 = 2gd
The sign convention that we will use for direction is this: "down" is the negative direction. If you are given a velocity such as -5.0 m/s, we will assume that the direction of the velocity vector is down. Also if you are told that an object falls with a velocity of 5.0 m/s, you would substitute -5.0 m/s in your equations. The sign convention would also apply to the acceleration due to gravity as shown above. The direction of the acceleration vector is down (-9.81 m/s2) because the gravitational force causing the acceleration is directed downward.
hope this info helps you out!
A 2 kg blue car is moving 6 m/s to the right and collides with a 3 kg red car that is moving 2 m/s to the left. The cars collide and stick together. What is their velocity after the collision? Include units on your answer.
Answer:
Their velocity after the collision is 1.2 m/s, to the right.
Explanation:
Given;
mass of the blue car, m₁ = 2 kg
initial velocity of the blue car, u₁ = 6 m/s
mass of the red car, m₂ = 3 kg
initial velocity of the red car, u₂ = 2 m/s
let the blue car moving to the right be in positive direction
also, let the red car moving to the left be in negative direction
Apply the principle of conservation of linear momentum for inelastic collision.
m₁u₁ - m₂u₂ = v(m₁ + m₂)
where;
v is their velocity after the collision
(2 x 6) - (3 x 2) = v(2 + 3)
12 - 6 = 5v
6 = 5v
v = 6/5
v = 1.2 m/s, to the right
Therefore, their velocity after the collision is 1.2 m/s, to the right.
Un corp, pleacă din repaus de la o poziției X 0 =2m față de origine, și se deplasează cu accelerația a=2m/s 2 . Determinați: a) Legea de mișcare (1p) b) Calculați poziția în care se află mobilul după 5s (1p) c) Calculați viteza mobilului după 5s. (1p)
Răspuns:
B.) 25m C.) = 10m / s
Explicaţie:
Dat fiind :
Poziția inițială (u) = odihnă = 0
Poziția inițială = 2m de la origine
Accelerarea = 2 m / s²
Legea mișcării: prima lege a mișcării care afirmă că un corp va continua în starea sa de repaus sau viteză uniformă în linie dreaptă, cu excepția cazului în care este acționat de o altă forță pentru a-l face să acționeze altfel.
B.) poziție după 5 secunde:
Folosind relația:
S = 1/2 * la ^ 2
S = distanță; a = accelerare; t = timp
S = 0,5 (2) (5 ^ 2)
S = 0,5 * 2 * 25
S = 25 m
C.) viteza după 5 secunde:
v = u + la
Unde a = accelerație; t = timp; v viteza finală
v = 0 + 2 (5)
v = 10 m / s
In interactions of action-reaction pairs involving Earth and everyday objects, the effect on Earth's motion is often negligible because
Answer:
...The earth has a great mass. Since mass and inertia are directly proportional to each other, the larger the mass of the object, the more inertia that it has. Inertia is the objects resistance to a change in motion.
Explanation:
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Answer:
C is the answer for the question
Answer:
reflection iim pretty sure
Explanation:
What is pitch?
O A measure of the speed of sound
O The highness or lowness of sound
O A characteristic of light
Answer:
The second one
Answer:
The highness or lowness of sound
Explanation:
An object free falls for 3.5 seconds . How far does it fall?
sea waves and sea swells
Answer:hmmm nice
Explanation:
What happens to the mass of an object when the
parts are rearranged?
A the total mass of the object triples
B the total mass of the object remains the same
Answer:
.
Explanation:
Answer:
A
Explanation:
I am like 90% this is correct
Find our the total distance between those 2 womens after 100 seconds. Refer the image for the full question ASAP. Give me a complete brief solution of this above question!
[tex]\small\bf\red{First\: Women}\begin{cases}\sf{Initial\: Velocity\: =\: 15m/s}\\\sf{Time\: Taken\: = 100\: seconds}\end{cases}[/tex]
[tex]\small\bf\green{Second\: Women}\begin{cases}\sf{Initial\: Velocity\: =\: 20m/s}\\\sf{Time\: Taken\: = 100\: seconds}\end{cases}[/tex]
To Find[tex]\:\:\:\:\bullet\:\:\sf{Distance \: between \:them \:after \:{\sf{\blue{100 \:seconds}}}} \\ [/tex]
Solution[tex]\\→\:\:\:\sf Distance\: travelled \:by \:1st \:women\: = \: Velocity \times Time\:taken[/tex]
[tex]→\:\:\:\sf 15 \times 100[/tex]
[tex]→\:\;\:\sf 1500m[/tex]
[tex]→\:\:\:\sf s_{1} = {\sf{\red{1500m}}} \\ \\ [/tex]
[tex]\Rightarrow\:\:\:\sf Distance \:travelled \:by\: 2nd \:women\: = \: Velocity \times Time\:taken[/tex]
[tex]\Rightarrow\:\:\:\sf 20 \times 100[/tex]
[tex]\Rightarrow\:\:\:\sf 2000m[/tex]
[tex]\Rightarrow\:\:\:\sf s_{2} = {\sf{\purple{2000m}}} \\ \\ [/tex]
[tex]\small{\underline{\bf{Now, \:Distance \:between \:them\: =\: s_{2} - s_{1}}}_{}}[/tex]
[tex]\hookrightarrow\:\:\:\sf 2000 - 1500[/tex]
[tex]\hookrightarrow\:\:\:\bf \pink{500m} \\ \\ [/tex]
[tex]{\underline{\bf{Hence, }}}[/tex]
Total Distance between them after [tex]\bf{100 \:seconds}[/tex] is [tex]\bf\orange{500m}[/tex]
Since friction is a force,
what unit is friction
measured In???
Answer:
Since friction is a force it is measured in newtons
Hope this helps
Which scenario describes a transformation of thermal energy into chemical energy?
A You turn on the heater in your car.
B
The UV light from the Sun causes a sunburn.
С
The Sun's energy causes you to sweat.
D
The oven bakes dough into bread.
Answer:
The Answer is A
Explanation:
Which scenario describes a transformation of thermal energy into chemical energy? You turn on the heater in your car. The UV light from the Sun causes a sunburn. The Sun's energy causes you to sweat.
What is the kinetic energy of a 620.0 kg roller coaster moving with a velocity of 9.00 m/s? Round to 3 significant figures.
2,790 J
5,580 J
25,100 J
50,200 J
Answer:
c, 25,100 J
Explanation:
edge2o2o
PLEASE HELP! FOR BRAINLIEST!
Answer:
The answer is B) Lourdes>Jameson= Katherine >Montel
Explanation:
Use: W= mgs
Which of these changes would likely occur if the rate of Earth's rotation on its axis decreased? The length of day would be shorter F The length of day would be longer G The length of the seasons would be shorter. H The length of the season would be longer.J
Answer:
F. The length of day would be longer
Explanation:
Earths rotates on its axis from the eastward to the westward direction, earth takes about 24 hours to complete its rotation. If the rate of earth's rotation on its axis slows down then the days will be longer than usual. Thought the length of year would remain the same. Earth rotation is also impacted by the sun and moon's gravitational pull. The disappearance of the centrifugal force form the surface would cause climate changes and seasonal extremes.During a chemical reaction the reactants are re-arranged into new substance products true or false
Answer:
True
Explanation: Magic
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Answer: I believe the answer is A
Explanation: Because decomposers break down chemicals and other things and make the soil for good plant growth
Chapter 5 Review Questions
How would you calculate the spring constant of an unknown spring?
A. graph the force vs. extension of the spring and find the slope
B. Use Hooke's law to calculate the spring constant knowing one force of the spring and one deformation of the spring
C. graph the force vs. extension of the spring and find the inverse of the slope
D. conduct a series of experiments with different amounts of deformation on the spring and calculate spring constant with Hooke's Law
What acceleration does the force of earth's gravity peoduce
Help me PLEASE! 25 points!!!!! :)
Answer:
A.
Explanation:
All the arrows align to the point right
The BMI of someone that weights 121 pounds and is 64 inches tall:
A: 17.55
B: 32.52
C:20.77
Answer:
B
;)
Explanation:
Answer:
B - 32.52
Explanation:
Hope this Helps!
:)
Energy of position or location is called
A. nuclear energy
B. potential energy
C. kinetic energy
D. electrical energy
Two trucks parked at a loading dock exert a gravitational force,
F, on each other. The cargo from each truck is unloaded so that
the mass of each truck becomes one-half of its original value.
Which of the following represents the present gravitational
force between the trucks?
Answer:
F/4
Explanation:
Quizzlet
A student moves a box across the floor by exerting 56.7 N of force and doing 195 J of
work on the box. How far does the student move the box?
A.3.4 m
B. 11,056 m
C.138 m
D.0.29 m
Answer:
A. 3.4 m
Explanation:
Given the following data;
Force = 56.7N
Workdone = 195J
To find the distance
Workdone is given by the formula;
[tex] Workdone = force * distance[/tex]
Making "distance" the subject of formula, we have;
[tex] Distance = \frac {workdone}{force} [/tex]
Substituting into the equation, we have;
[tex] Distance = \frac {195}{56.7} [/tex]
Distance = 3.4 meters.
Who might be suffering from dissociative fugue?
Answer:
More common in adults.
Explanation:
The axis of a circular cylinder coincides with the z-axis and it rotates with an angular velocity of (3i−5j +9k) rad/s. Determine i. The tangential velocity at a point P on the cylinder, whose co-ordinates are ( j +5k) metres,
Answer:
The tangential velocity at point P is [tex]\vec v_{P} = -34\,\hat{i} -15\,\hat{j}+3\,\hat{k}\,\,\left[\frac{m}{s} \right][/tex].
Explanation:
Vectorially speaking, we define tangential velocity at point P ([tex]\vec v_{P}[/tex]), measured in meters per second, by the following vectorial expression:
[tex]\vec v_{P} = \vec \omega \times \vec r_{P}[/tex] (1)
Where:
[tex]\vec \omega[/tex] - Angular velocity of the cylinder, measured in radians per second.
[tex]\vec r_{P}[/tex] - Radius of rotation, measured in meters.
If we know that [tex]\vec \omega = 3\,\hat{i}-5\,\hat{j}+9\,\hat{k}\,\left[\frac{rad}{s} \right][/tex] and [tex]\vec r_{P} = \hat{j}+5\,\hat{k}\,[m][/tex], then the tangential velocity at point P is:
[tex]\vec v_{P} = \left|\begin{array}{ccc}\hat{i}&\hat{j}&\hat{k}\\3\,\frac{rad}{s} &-5\,\frac{rad}{s} &9\,\frac{rad}{s} \\0\,m&1\,m&5\,m\end{array}\right|[/tex]
[tex]\vec v_{P} = \left[\left(-5\,\frac{rad}{s} \right)\cdot (5\,m)-(1\,m)\cdot \left(9\,\frac{rad}{s} \right)\right]\,\hat{i}-(5\,m)\cdot \left(3\,\frac{rad}{s}\right)\,j +\left(3\,\frac{rad}{s} \right)\cdot (1\,m)\,\hat{k}[/tex]
[tex]\vec v_{P} = -34\,\hat{i} -15\,\hat{j}+3\,\hat{k}\,\,\left[\frac{m}{s} \right][/tex]
The tangential velocity at point P is [tex]\vec v_{P} = -34\,\hat{i} -15\,\hat{j}+3\,\hat{k}\,\,\left[\frac{m}{s} \right][/tex].
When thermal energy is added to an object, what happens to the motion of the particles?
A.
increases
B.
decreases
C.
remains unchanged
D.
decreases, then increases
The answer is A
Explanation:
A weightlifter completes a series of lifts with a 700 N weight. In one lift, he raises the weight to a height of 2.5 m off the ground. The lift takes 0.60 s to complete. What power does the weightlifter have been performing this lift
Answer:
The output power the weightlifter is 2916.67 W.
Explanation:
Given;
weight lifted, W = 700 N
height the weight is lifted, h = 2.5 m
time taken to lift the weight, t = 0.60 s
The output power the weightlifter is calculated as;
Power = Energy applied / time taken
Energy applied = weight lifted x height the weight is lifted
Energy applied = 700 x 2.5
Energy applied = 1750 J
Power = 1750 / 0.6
Power = 2916.67 J/s = 2916.67 W.
Therefore, the output power the weightlifter is 2916.67 W.
What kind of energy is stored when you stretch a spring?
A. Kinetic energy
B. Chemical energy
C. Elastic energy
D. Gravitational potential energy
Answer:
it's B
Explanation:
Elastic potential energy is energy stored as a result of applying a force to deform an elastic objects. The energy is stored until the force is removed and the object springs back to it's original shape, doing work in the process. The deformation could involve compressing, stretching or twisting the object
Answer: Elastic energy
Explanation:
A PE X
