Answer:
Momentum = Mass x Velocity
=5.5x2
=11kgm/s
A 1,000 kg car is travelling at 6.5 m/s to the North. A 3,500 kg truck is travelling South at the same velocity. What is the total momentum of the two vehicles (don’t forget to assign a NEGATIVE velocity to one of the vehicles, because they are travelling in opposite directions)
Please answer ASAP
Answer:
16250 kgm/s due south
Explanation:
Applying,
M = mv................. Equation 1
Where M = momentum, m = mass, v = velocity.
From the car,
Given: m = 1000 kg, v = 6.5 m/s
Substitute these values into equation 1
M = 1000(6.5)
M = 6500 kgm/s
For the truck,
Given: m = 3500 kg, v = 6.5 m/s
Substitute these values into equation 1
M' = 3500(6.5)
M' = 22750 kgm/s.
Assuming South to be negative direction,
From the question,
Total momentum of the two vehicles = (6500-22750)
Total momentum of the two vehicles = -16250 kgm/s
Hence the total momentum of the two vehicles is 16250 kgm/s due south
A hydraulic jack is used to lift a car by applying a force of 120N at the pump piston,if the area of the ram and pump piston are 100cm squared and 1m squared respectively
Complete question:
A hydraulic jack is used to lift a car by applying a force of 120N at the pump piston, if the area of the ram and pump piston are 100cm squared and 1m squared respectively. What is the weight of the car?
Answer:
the weight of the car is 1.2 N
Explanation:
Given;
applied force, F₁ = 120 N
area of the effort (pump), A₁ = 1 m²
area of the load (ram), A₂ = 100 cm² = 1 x 10⁻² m²
let the weight of the car = F₂
The applied pressure is constant and the following equations can be used to calculate the weight of the car.
[tex]P = \frac{F_1}{A_1} = \frac{F_2}{A_2} \\\\F_2 = \frac{F_1 \times A_2}{A_1} \\\\F_2 = \frac{120 \times (1\times 10^{-2})}{1} \\\\F_2 = 1.2 \ N[/tex]
Therefore, the weight of the car is 1.2 N
PLEASE HELP !!
Reaction time + ? = Speed
Coordination Time
Mental Reaction Time
Physical Reaction Time
Movement Time
Answer:
Movement Time
explanation:
what are thedisadvantages of using alcohol instead of mercury in a thermometer?
Answer:
Disadvantages. It is less durable because alcohol evaporates faster than mercury. It cannot measure high temperature because of a low boiling point. It wets the walls of the thermometer, which can adversely impact the accuracy of readings.
The photoelectric effect provides evidence to support which of the following claims
Answer:
Metals produce electrons ( photoelectrons ) when exposed to light.
Explanation:
These photoelectrons produce photocurrent and this was proved by Eistein illustration of photocurrent and stopping potential.
power of a crane is 25000 watt calculate the time required by it to lift a load of 6000 kg up tp the height of 20 m
State three differences between solid friction and viscosity
HELP NOWWWWW PLEASE
Which of the following materials is most efficient at transferring vibrations?
a) water
b) air
c) pillow
d) steel rod
Answer:it is A
Explanation:
ok
a boy throws a ball straight up into the air. it reaches its highest point after 4 seconds.how fast was the ball going when it left the boy's hand
Answer:
Explanation:
The most important thing to remember about parabolic motion in physics is that when an object reaches its max height, the velocity right there at the highest point is 0. Use this one-dimensional motion equation to solve this problem:
v = v₀ + at and filling in:
0 = v₀ + (-9.8)(4.0) **I put in 4.0 for time so we have more than just 1 sig fig here**
0 = v₀ - 39 and
-v₀ = -39 so
v₀ = 39 m/s
Who's going to win game 6 tonight? Clippers or Mavericks?
I just want to know your opinion :)
Mavericks!!!!!!!!!!!!!
What are the major components of a truss bridge?
Answer:
In a truss bridge, two long - usually straight members known as chords - form the top and bottom; they are connected by a web of vertical posts and diagonals. The bridge is supported at the ends by abutments and sometimes in the middle by piers.
Explanation:
Hope it helps mark as brainliest pls
:)
What would the final volume of 40 L of gas at 80 pascals be if the pressure increases to 130 pascals?
Answer:
Final volume, V2 = 24.62 L
Explanation:
Given the following data;
Initial volume = 40 L
Initial pressure = 80 Pa
Final pressure = 130 Pa
To find the final volume V2, we would use Boyles' law.
Boyles states that when the temperature of an ideal gas is kept constant, the pressure of the gas is inversely proportional to the volume occupied by the gas.
Mathematically, Boyles law is given by;
[tex] PV = K[/tex]
[tex] P_{1}V_{1} = P_{2}V_{2} [/tex]
Substituting into the equation, we have;
[tex] 80 * 40 = 130V_{2} [/tex]
[tex] 3200 = 130V_{2} [/tex]
[tex] V_{2} = \frac {3200}{130}[/tex]
[tex] V_{2} = 24.62 [/tex]
Final volume, V2 = 24.62 Liters
39. A dog runs on a waxed floor at an initial speed of 2 m/s. It slides to a stop with an
acceleration of -0.43 m/s2. How long does it take for the dog to stop?
Answer:
Explanation:
Use the one-dimensional equation
[tex]v_f=v_0+at[/tex] where vf is the final velocity of the dog, v0 is the initial velocity of the dog, a is the acceleration of the dog, and t is the time it takesto reach that final velocity. For us:
0 = 2 + -.43t and
-2 = -.43t so
t = 4.7 seconds
Write your answers to these questions. • Does the cardboard fall off? • Does the water pour out? • Something is pushing against the cardboard to hold the water in. What do you think it is?
Answer:
Have you ever tried turning a glass of water upside down without spilling it? It seems impossible! Both kids and adults will be amazed by this experiment that appears to defy gravity.
With just a few simple household items, you can try this simple and fun science experiment where kids can get see the effects of air pressure in action. Printable instructions, a demonstration video, and an easy to understand explanation of how it works are included below.
Helpful Tip: Be sure to try this experiment over a sink or large container lest you accidentally make a BIG wet mess!
Q:1 write down the differences between mass and weight ?
Answer:
mass is the amount of "matter" in an object. weight is the force exerted on an object by gravity
Explanation:
If a machin
has a mechanical advantage of 4, and an ideal mechanical advantage of 5. What is the
efficiency of the machine?
Answer:
Efficiency = 80%
Explanation:
Given the following data;
Mechanical advantage (MA) = 4
Ideal mechanical advantage (IMA) = 5
To find the efficiency of the machine;
Mathematically, the efficiency of a machine is given by the formula;
[tex] Efficiency = \frac {MA}{IMA} * 100 [/tex]
Substituting into the formula, we have;
[tex] Efficiency = \frac {4}{5} * 100 [/tex]
[tex] Efficiency = 0.8 * 100 [/tex]
Efficiency = 80%
What is the dependent variable?
A. Speed
B. Time
C. Acceleration
D. Distance
Answer: B. Time
Explanation: The speed in the independent variable representing the time taken to move somewhere. The time is the dependent variable because it changes on how fast or slow the vehicle moved. Hope this helped.
I need helpppp please
Answer:
b
Explanation:
what is anti-matter made of
HERE'S YOUR ANSWER
Explanation:
Antimatter is a material composed of so-called antiparticles. It is believed that every particle we know of has an antimatter companion that is virtually identical to itself, but with the opposite charge. For example, an electron has a negative charge.
How do sports play a role in American Culture? Is this different from how sports play a role in other cultures?
PLEASE ANSWER QUICKLY!!!
Answer: American sports culture has a much greater appreciation of and emphasis towards collegiate and high school sports. This may be the strongest difference between American sports culture and every other countries' sports culture.
In space, are fires possible without oxygen? If so how would it happen?
Answer:
no
Explanation:
it just doesn't work that way, try to search the fire pyramid on G. O. O. G. L. E. and you'll see why
when work is done on a body its energy
Why are earths rocks generally younger than earth itself.
Answer:
The reason why the rocks are more younger than Eart itself is because they come from processes like plate tectonics, volcanoes, and erosions that made up Earth's surface.
Answer:
The lack of impact craters and the age of most rocks on Earth in comparison to other bodies in the solar system can be attributed to processes such as volcanism, plate tectonics, and erosion that have reshaped Earth's surface, and this is why most of Earth's rocks are much younger than the Earth itself.
A skateboarder starts at 2.75 m/s and accelerates for 8.90 s over a distance of 16.7 m. What is his final velocity?
A) 3.44 m/s
B) 33.1 m/s
C) 1.00 m/s
D) 4.06 m/s
Explanation:
x = 16.7 m
v₀ = 2.75 m/s
t = 8.90 s
Find: v
x = ½ (v + v₀) t
16.7 m = ½ (v + 2.75 m/s) (8.90 s)
v = 1.00 m/s
An eccentric inventor attempts to levitate by first placing a large negative charge on himself and then putting a large positive charge on the ceiling of his workshop. Instead, while attempting to place a large negative charge on himself, his clothes fly off. Explain.
Answer:
shirt is little attached to the body, it can come off and fly away
Explanation:
In electrostatics, charges of different signs attract and charges of the same sign repel.
In this case, when a negative charge is placed on it, both the inventor and the shirt are charged, therefore there is a repulsive force, also there is an attraction between the positive charge of the roof attracts the negative charge, such as the shirt. of weak the two forces not greater than the resistance of the walk.
As the shirt is little attached to the body, it can come off and fly away
The following diagram shows various positions of the moon in its orbit around Earth. The image of the moon shows its phase as seen from Earth.
In which position will three-fourths of the illuminated side of the moon be visible from Earth?
a. A
b. B
c. C
d. D
See file for diagram.
Answer: I dont know Im srry diagram
Explanation:
Diagram baby + baby Diagram = Diagram baby Diagram
A wave has a frequency of 34 Hz and a wavelength of 2.0 m. What is the speed of the wave?
Answer:
v=FX
v=34(2.0)
v=68m/s
Explanation:
wavelength:it is the distance between two successive points that are in phase
Blank is the time rate of change in velocity
Acceleration is the time rate of change in velocity.
Acceleration = Rate of change of velocity
People move into and begin living in an area that previously
had no human activity. What will most likely be the effect on
the amount of water?
A Water will be more evenly distributed in the area
B Most of the fresh water in the area will be converted to
salt water
C The amount of fresh water suitable for drinking will
increase
D There will be less available for other living things
Group of answer choices
c
D) There will be less available for other living things.
There will be less available for other living things is the most likely effect on the amount of water and is denoted as option D.
What is Water?
This is a compound which is regarded as a universal solvent and can be found in rivers, streams etc.
People moving into and living in the area means water will be used which will make it less available for other living things.
Read more about Water here https://brainly.com/question/5060579
#SPJ9
which situation results in the least attraction between two magnets?
Answer:
The south pole of one magnet is near the south pole of the other
magnet.
