We have that the expression for the magnitude of the horizontal force F is
[tex]F=(m_1+m_2)gtan\phi[/tex]
From the question we are told
find an expression for the magnitude of the horizontal force f in the figure for which m1 does not slip either up or down along the wedge. all surfaces are friction-less.
Generally the equation for Normal force is mathematically given as
[tex]N=\frac{n_2g}{cos\pji}[/tex]
Where
a signifies acceleration
[tex]Nsin\phi=m_2a[/tex]
Therefore
Equating above equations
[tex]a=\frac{Nsin\phi}{m^2}\\\\a=gtan\ph[/tex]i
Generally the equation for Force on wedge is mathematically given as
[tex]F=m_1a+Nsin\phi[/tex]
[tex]F=(m_1+m_2)gtan\phi[/tex]
Therefore
The expression for the magnitude of the horizontal force F is
[tex]F=(m_1+m_2)gtan\phi[/tex]
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a bus starts to move from rest . if its velocity becomes 90km/per hour after 8s. calculate its acceration .
its answers is : 3.13ms-2
Answer:
3.13m/s²
Explanation:
first convert from KM to M, 1km-1000m then convert from km/h to m/s (speed)90×1000/3600 note: 1h- 3600s
=25m/s
a=v/t
a= 25m/s ÷ 8s
a= 3.125 / 3.13m/s²
9. What is NOT true about the Body Composition Assessment?
It can be measured using skin calipers, a water test, and body composition scales.
OBMI is an indirect body composition measuring method using your weight and height.
ОО
Your weight alone can determine the percentages of your body's composition.
OBMI can be a reliable indicator of body composition.
Answer: Your weight alone can determine the percentages of your body's composition
Explanation:
C. Your weight alone can determine the percentages of your body's composition.
What is Body Composition Assessment?
Body composition analysis is the assessment of the proportion of fat to fat-free mass in your body.
Performing Body Composition Assessment will tell you your own body's unique makeup and help you identify areas to work on to improve your overall health and wellness.
Thus, the statement that is NOT true about the Body Composition Assessment is your weight alone can determine the percentages of your body's composition.
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A plane mirror moves towards the object with a velocity of 2m/s and the object itself moves towards the mirror with a velocity of 5m/s. What is the velocity of the image approaching towards the object..
Answer:
3.33 m/s
Explanation:
1/2 = 1/5 + 1/x
1/x = 1/2 - 1/5
1/x = 5/10 - 2/10
1/x = 3/10
x = 10/3
x = 3.33 m/s
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A raindrop was 16meters above the ground, falling straight down at a constant velocity. It took the raindrop 2seconds to fall half the distance to the ground. What was the raindrop's velocity?
what is the answer
Answer is 4 m/s
Step-by-step explanation:-Let :-
Constant velocity = v
Time (t) = 2 seconds
Height (h) = 16 metres
As the raindrop has constant velocity, we can write that :
[tex] \frac{h}{2} = vt[/tex]
Substituting the values, we get,
[tex] \frac{16}{2} = v \times 2[/tex]
[tex]8 = v \times 2[/tex]
[tex] \frac{8}{2} = v[/tex]
[tex]v = 4 \: m/s[/tex]
Therefore, the velocity of the raindrop is 4 m/s.
✍️ By Benjemin ☺️
What is the force of a object that has a mass of 7 kg and an acceleration of 6 m/s/s
Answer:
42 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question
mass = 7 kg
acceleration = 6 m/s²
We have
force = 7 × 6 = 42
We have the final answer as
42 NHope this helps you
Can someone please help
Answer:
55 km
pls give brainliest hope it help
Explanation:
A car drives 215 km west and then 85 km south. Find the distance and displacement of the car.
Answer:
Distance= 300 km
Displacement= 130
Explanation:
When you find distance you have to add
When you find displacemnet you subtract
If a car drives 215 kilometers west and then 85 kilometers south, then the distance and displacement of the car would be 300 kilometers and kilometers respectively.
What is displacement?Displacement is a vector quantity. This indicates that it has both a direction and a magnitude and that it is visually represented as an arrow that points from the starting position to the ending position.
As given in the problem, if a car drives 215 kilometers west and then 85 kilometers south, then we have to find the distance and displacement of the car,
The distance traveled by car = 215 kilometers + 85 kilometers
= 300 kilometers
The displacement covered by the car = √(215² + 85²)
= 231.2 Kilometers
Thus, the distance traveled by car would be 300 Kilometers and the displacement would be 231.2 Kilometers in the southwest direction.
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How far could you skip in one hour? 20m/ 3m/s
Answer:
20m/s = 72,000m, 3m/s = 10800m
Explanation:
5 star please
What happens when you sit in a
chair?
A. Gravity is pulling you down but the chair
pushes you up with equal force.
B. Gravity is pulling you down and the chair
pushes you up into the air.
C. There is no force being exerted.
D. Gravity is pulling you down and the chair is
sliding sideways.
Answer:
B
Explanation:
that is the only way you can sit
*Average Speed v = d/t
Distance d = v t
Time t = d/v
* remember v = average speed
Solve the following problems for average speed, distance or time. Round to tenths place:
Find the distance traveled by a car that travels with an average speed of 110 km/h for 3.5 h.
How long does it take a baseball moving with an average speed of 35 m/s to travel 18 m?
What is the average speed of a car that travels 870 km in 14.5 h?
Find the distance traveled by a car that travels with an average speed of 110 km/h for 3.5 h
To solve for distance:
d = v t
d = 110 × 3.5
d = 385 km
How long does it take a baseball moving with an average speed of 35 m/s to travel 18 m?
To solve for time:
t = d/v
t = 18 / 35
t = 0.514286
t = 0.5 s
What is the average speed of a car that travels 870 km in 14.5 h?
To solve for average speed:
v = d/t
v = 870 / 14.5
v = 60 km/h
1. A race car accelerates uniformly from 19.5 m/s to 50.1 m/s in
2.47 seconds. Determine the acceleration of the car.
The acceleration of the car is 79.8.
Answer:
12.39m/s²
Explanation:
use the formula a=v-u
t
Please write and solve this question in five sentences or more
Answer:
m
Explanation:
hjvb,nbvhgjhghjmn,
Question:
the distance of the car can move by velocity 15 m/s for time 5s is :
Physics
Answer:
c) 2.05
Explanation:
CR(OH)3+HCIO4>CR(CIO4)+H2O
Answer:
Cr(OH)3 + 3 HCLO4 → Cr(CLO4)3 + 3H2O
Stoichiometry balancing +
4. Make new charts for each of the following scenarios. Predict what you think the graphs will
look like, and explain your reasoning.
a. The man starts three meters from the house and accelerates towards the tree.
b. The man stands still while he talks on his cell phone at the middle of the sidewalk, then
walks toward the house at a constant rate trying to get better cell reception. He comes to
a sudden stop when the coverage is good (about a meter before the house) and stands
still to finish his conversation.
c.The man starts close to the house, stands still for a little while, then walks toward the
tree at a constant rate for a while, then the slows to a stop.
Draw a position/time, velocity/time, and a acceleration/time graph for each scenario
a box has a length of .5 m and a width of .1m. if the box exerts a force of 10 N on the floor, what is the pressure of the box on the floor
Answer:
The pressure of the box on the floor is 200 Pa
Explanation:
Given,
Length of the box=0.5m
Width of the box= 0.1m
∴Area of the box, A= (0.5 X 0.1) sq.m
= 0.05 sq.m
We know,
Pressure, P= F/A
= 10/0.05 Pa
= 200 Pa
∴The pressure of the box on the floor is 200 Pa
A treasure map directs you to start at palm tree
and walk due north for 15.0 m. You are then to turn
90° and walk 22.0 m; then turn 90° again and
walk 5.00 m.
Give the distance from the palm tree,and the direction to north, for each of the four possible locations of the treasure .
The direction of the 90° turns are the possible directions used for the calculations
The four distances and directions are;
24.2 m, 65.6° West of North29.7 m, 42.7° East of North24.2 m, 65.6° East of North29.7m, 47.7° West of NorthReason:
Let point A represent the motion of the treasure hunter, we have:
Turning West then West;
Walking due north to location (0, 15)
Turn 90° West and walk 22.0 m to the location (-22, 15)
Turn 90° West again and walk 5.00 m. to the location (-22, 10)
The location of point A = (-22, 10)
[tex]Direction \ of \ point \ A = arctan \left(\dfrac{10}{-22} \right) \approx -24.4^{\circ}[/tex]
Direction to North = 90° - 24.4° ≈ 65.6°
Distance = √((-22)² + 10²) ≈ 24.2
Therefore, we have;
24.2 m, 65.6° West of NorthTurning East then West:
Turn 90° East and walk 22.0 m to the location (22, 15)
Turn 90° West again and walk 5.00 m. to the location (22, 20)
The location of point A = (22, 20)
[tex]Direction \ of \ point \ A = arctan \left(\dfrac{20}{22} \right) \approx 42.7^{\circ}[/tex]
Direction to North = 90° - 42.3° ≈ 47.7° East
Distance = √((-22)² + 20²) ≈ 29.7
Therefore, we have;
29.7 m, 42.7° East of NorthTurning East then East:
Turn 90° East and walk 22.0 m to the location (22, 15)
Turn 90° East again and walk 5.00 m. to the location (22, 10)
The location of point A = (22, 10)
[tex]Direction \ of \ point \ A = arctan \left(\dfrac{10}{22} \right) \approx 24.4^{\circ}[/tex]
Direction to North = 90° - 24.4° ≈ 65.6° East
Distance = √((-22)² + 10²) ≈ 24.2
Therefore, we have;
24.2 m, 65.6° East of NorthTurning West then East:
Turn 90° West and walk 22.0 m to the location (-22, 15)
Turn 90° East and walk 5.00 m. to the location (-22, 20)
The location of point A = (-22, 20)
[tex]Direction \ of \ point \ A = arctan \left(\dfrac{20}{-22} \right) \approx -42.7^{\circ}[/tex]
Direction to North = 90° - 42.7° ≈ 47.7° West
Distance = √((-22)² + 20²) ≈ 29.7
Therefore, we have;
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the speed of an object increases by 30 m/s in 10 seconds. what is its acceleration?
Answer:
3m/s^2
Explanation:
acceleration=velocity/time
acceleration= 30/10=3m/s^2
if human beings ever travel to a planet whose mass and radius are both twice that of the earth, their weight on that planet will be
Cosmic abundance is made up primarily of what gases?
Answer:
Hydrogen and Helium
Explanation:
The abundance of chemical elements in the universe was made up of large amounts of these 2 gases, the rest made up only about 2% of the universe. Which were produced mostly by supernovae and certain red giant stars
How is air resistance similar to gravity? give me two reasons
Explanation:
I think this would help you. Read this and make your own answer ok.
Please help with number 24
Answer:
I think its false cause with a slope you have acceleration
why do some science classes teach that electrons, comparatively, have no mass?
helpppp ASAPPP
Answer:
An electron's mass is only 1/1,836 the mass of a proton. An electron is therefore considered nearly massless in comparison with a proton or a neutron.
Are you an antisocial person. Me honestly am
Explanation:
By the way.. What's the meaning of ANTISOCIAL??..(ㆁωㆁ)
If you tell me the meaning of it, I'll tell you my answer too(ㆁωㆁ)
Why does it sound different when tapping on an aluminum spoon with an aluminum spoon when tapping on an iron jar?
Answer:
When the different objects drop on floor then each object vibrate at its natural frequency and produce different sound.
Explanation:
Conclusion: Thus different object has different vibration frequency and when they dropped on floor each vibrate at its natural frequency and produce different sound.
What would be the new pressure if 250 cm3 of gas at standard pressure is compressed to a volume of
150 cm3?(
= constant)
V
n
T
Р P.
Initial
Final
Effect
Answer:
P T V n
Initial: 730 mmHg; 298 K; 250 cm³; --
Final: 760 mmHg; 273 K; ?; --
Effect: ↑; ↓; ↓P ↓T; --
250 cm³ x 273 K/298 K x 730 mmHg/760 mmHg = 220 cm³
Explanation:
which kind of energy transformation occurs in a gasoline-powered car?
F. Chemical energy is converted into mechanical energy.
G. Mechanical energy is converted into light energy.
H. Light energy is converted into sound energy.
J. sound energy is converted into chemical energy.
what thermodynamic property describes the relationship of an equilibrium to temperature?
The thermodynamic property that describes the relationship between equilibrium and temperature is Thermodynamic equilibrium
Thermodynamics is a science that focuses on explaining chemically and physically phenomenons related to:
HeatTemperatureEnergyIn thermodynamics, the thermodynamic equilibrium occurs if the temperature or heat is in balance, and therefore it will not change in regular conditions. For example:
If a liquid has the same temperature as its surroundings, the temperature is likely to remain stableThe temperature of a liquid or solid does not change unless there are specific conditionsAccording to this, thermodynamic equilibrium describes the relation of equilibrium to temperatureLearn more in: https://brainly.com/question/22447172
express one light year into SI unit
Explanation:
The light-year, alternatively spelled lightyear, is a unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometers (9.46×1012 km) or 5.88 trillion miles (5.88×1012 mi).hope it helps.stay safe healthy and happy.Which object is in static equilibrium?
Answer:
I believe it's C. a book that has no net force acting on it and is sitting on a table.