answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
quester
1 month ago
5

A box weighing 46 newtons rests on an incline that makes an angle of 25° with the horizontal. What is the magnitude of the compo

nent of the box’s weight perpendicular to the incline?
(1)19 N
(2)21 N
(3)42 N
(4)46 N
Physics
1 answer:
inna [3.1K]1 month ago
8 0

The force of the box’s weight acting perpendicular to the slope can be computed using the formula:

F = wcos(a)

In this equation, F represents the component of the weight perpendicular to the slope,

W denotes the box's total weight,

and A is the angle of the slope.

Thus, substituting values gives: F = (46)cos(25)

Resulting in F = 42 N

You might be interested in
On the assumption that copper– nickel alloys are random mixtures of copper and nickel atoms, calculate the mass of copper which,
inna [3103]

Response:

65.14 g

Clarification:

The entropy change resulting from mixing two metals is

\delta S= R[(n_{cu}+n_{Ni})ln(n_{cu}+n_{Ni})-n_{cu}lnn_{cu}-n_{Ni}lnn_{Ni}]

Here, R is the real gas constant, n_{cu} denotes the moles of copper, while n_{Ni} signifies the moles of nickel.

Therefore, determining the moles of Nickel yields

n_{Ni}=\frac{m_{Ni}}{M_{Ni}}

n_{Ni}=\frac{100}{58.69} =1.7 moles

Then substituting n_{Ni} = 1.7 into the equation produces ΔS= 15,

with R= 8.314, and solving gives

15= R[(n_{cu}+1.7)ln(n_{cu}+1.7)-n_{cu}lnn_{cu}-1.7ln1.7]

Upon resolving, the quantity of moles of copper in the mixture equals

n_cu= 1.025

Thus, the copper mass is calculated as n_cu×M_cu = 1.025×63.55 = 65.14 g

Consequently, the required mass is found to be = 65.14 g

3 0
1 month ago
8) A soccer goal is 2.44 m high. A player kicks the ball at a distance 10.0 m from the goal at an angle of 25.0°. The ball hits
Yuliya22 [3333]
The soccer ball's initial speed stands at 16.38 m/s. Given that the vertical distance is y = 2.44 m, the horizontal span x = 10.0 m, and the angle of launch θ = 25.0°. The initial velocity comprises two components, Vₓ and V. The calculations are as follows: Vₓ = V cosθ and V = V sinθ. The formula for horizontal distance becomes x = Vₓt. Since g is deemed 0, we can state that: x = Vₓt or 10 = V cos 25 * t. Solving for V gives us 10 = 0.906V * t, thus V * t = 10 / 0.906 = 11.038 m. Regarding the vertical distance (with g being negative due to the upward movement opposing gravity), we use y = V sinθ * t - 1/2 * g * t². Following through with the calculations leads us to determine that the soccer ball's initial speed is indeed 16.38 m/s.
6 0
1 month ago
A mechanical high-speed bat is flying along a path perpendicular to a wall. it emits a sound with a frequency f0 . the night is
inna [3103]
1. f1 = Vs + Vbat Vs fO
2. f1 = Vs Vs - Vbat fO
3. f1 = Vs Vs + Vbat fO
4. f1 = Vs + Vbat Vs - Vbat fO
5. f1 = 2Vs Vs - Vbat fO
6. f1 = Vs - Vbat Vs fO
7. f1 = Vs - Vbat Vs + Vbat fO
8. f1 = fO
9. f1 = 2Vs Vs + Vbat fO

The frequency that is detected is
f= (V+Vr) × fO/ (V + Vs)
The speed of sound is V = Vs
The speed of the receiver is Vr = O
For the speed of the source
Vs = -Vbat, indicating that the bat approaches the wall
Therefore, the correct formula is
f1 = (Vs / (Vs -Vbat)) × fO.
4 0
1 month ago
A player throws a football 50.0 m at 61.0° north of west. what is the westward component of the displacement of the football?
inna [3103]

Answer: 24.24 m

Explanation:

A player launches a football 50.0 m at an angle of 61° to the north of west. We will break this down into vertical and horizontal elements.

Horizontal component: 50 cos 61° = 24.24 m directed westward

Vertical component: 50 sin 61° = 43.73 m directed toward the north.

Refer to the diagram below.

Therefore, the westward displacement of the football corresponds to the horizontal component of the displacement, which is 24.24 m.

7 0
16 days ago
"if a stream flow measures 12 meters in 60 seconds, what is the stream's average rate of flow?"
Yuliya22 [3333]
Discharge refers to the volume of water flowing down a river or stream within a specific timeframe, typically measured in cubic feet per second or gallons per day. Generally, the discharge of a river is calculated by taking the product of the cross-sectional area of water in the channel and the average velocity of water at that section: discharge = area * velocity. In this instance, the result is 0.2 m/s.
7 0
11 days ago
Other questions:
  • You ride a roller coaster with a loop-the-loop. Compare the normal force that the seat exerts on you to the force that Earth exe
    14·1 answer
  • A person travels distance πR along the circumference
    6·2 answers
  • Object A and object B are initially uncharged and are separated by a distance of 1 meter. Suppose 10,000 electrons are removed f
    11·1 answer
  • For years, space travel was believed to be impossible because there was nothing there Rockets could push off in space in order t
    8·1 answer
  • A student must design an experiment to determine the relationship between the mass of an object and the resulting acceleration w
    8·1 answer
  • Two objects are placed in thermal contact and are allowed to come to equilibrium in isolation. The heat capacity of Object A is
    7·1 answer
  • A mover hoists a 50 kg box from the ground to a height of 2 m. What was the change in the box's energy
    11·1 answer
  • A plane has an average air speed (this is the speed the plane moves through air) of 750 mph. The plane flies a route of 5000 mil
    14·1 answer
  • Many gates at railway crossings are operated manually. A typical gate consists of a rod usually made of iron, consisting heavy w
    5·1 answer
  • A physicist is constructing a solenoid. She has a roll of insulated copper wire and a power supply. She winds a single layer of
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!