According to the question the torque is 46 Nm.
What is torque?Torque is a rotational force which can cause an object to rotate or spin around an axis. It is a measure of the amount of force applied to an object, multiplied by the distance from the point at which the force is applied to the axis of rotation. Torque is measured in units of force multiplied by distance, such as Newton meters (Nm). Torque can be positive or negative, depending on the direction of the force relative to the axis of rotation. A positive torque causes the object to turn clockwise, while a negative torque causes it to turn counterclockwise. Torque can also be applied to a system of particles or rigid bodies, such as a car or a wheel, to cause them to move in a particular direction.
The torque exerted by the fish on the fishing pole can be calculated by multiplying the force exerted by the fish (19 N) by the length of the fishing pole (2.4 m) and the sine of the angle (40°):
Torque = Force x Length x sin(Angle)
Torque = 19 N x 2.4 m x sin(40°)
Torque = 46 Nm
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HELP PLEASEEEEEE HELP PLEASE
The letter that represents the various descriptions is as follows:
5.) Angle of incidence: B
6.) Object: D
7.) Plain mirror:A
8.) Reflection: E
9.) Angle of reflection: C
10.) Normal: F
How does the diagram explain the law of reflection?The law of reflection in a plain mirror states that the angle of reflection is equal to the angle of incidence.
The diagram explains the law of reflection on a plain mirror because it shows the reflection of the object D as E after creating an angle of incidence B on the plane mirror surface A which is equal to the angle of reflection C.
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From a point 120 m above ground level, a stone is projected vertically upwards with a speed of u m s. If the stone rises to a height of 5 m above the point of projection calculate (a) the value of u, (b) the time the stone takes from projection until it reaches ground level, (c) the speed of the stone at ground level.
If the stone rises to a height of 5 m above the point of projection, then the value of u is 49 m/s, the time the stone takes from projection until it reaches ground level is 5 seconds, and the speed of the stone at ground level is 98 m/s.
What is the calculation for speed?To find the value of u,
v = u + at (velocity (v) ,the initial velocity (u), acceleration (a), and time (t))
At the highest point, the velocity of the stone becomes zero,
0 = u - gt
t = u/g
this value of t is put into the equation for displacement,
5 m = 120 m + ut - [tex]0.5gt^2[/tex]
Substituting t = u/g,
5 m = 120 m + u(u/g) - [tex]0.5g(u/g)^2[/tex]
u = √(2gh) = √(2 x 9.8 [tex]m/s^2[/tex] x 115 m) = 49 m/s
b) v = u + at
-u = 49 m/s - gt
t = (49 m/s)/g + √(([tex]49 m/s)^2[/tex] + 4gh)/g
t = 5 s
c)
v = u + at
-u = 49 m/s - g(5 s)
u = 49 m/s + 9.8[tex]m/s^2[/tex] x 5 s
u = 98 m/s
Hence, the value of u is 49 m/s, the time the stone takes from projection until it reaches ground level is 5 seconds, and the speed of the stone at ground level is 98 m/s.
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How is the plot of output of dc generator different from the plot of output for an ac generator
The key difference between the two types of generators is that DC generators produce a constant and unidirectional output while AC generators produce a varying and alternating output.
How does the AC and DC generator works ?The output of a DC generator produces a steady, unidirectional current that flows in one direction. The plot of its output voltage versus time would be a straight line with no fluctuations or changes in direction.
On the other hand, an AC generator produces an alternating current that changes direction periodically, usually at a fixed frequency. The plot of its output voltage versus time would be a sinusoidal waveform with a repeating pattern of positive and negative values.
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A 2.5 m ramp is used to load a truck 1.0 m off of the ground. A man uses 600 N of force to load a box weighing 1200 N. What is the efficiency of the ramp? What is the mechanical advantage of the ramp?
The efficiency of the ramp is 80% and the mechanical advantage is 2.
What is the efficiency of the ramp?
To solve this problem, we can use the formulas for efficiency and mechanical advantage:
Efficiency = (output work / input work) x 100%
Mechanical Advantage = output force / input force
First, we need to find the output force and output work of the ramp.
The output force is the weight of the box, which is 1200 N.
The output work is the force applied by the output force over the distance it moves. Since the box moves a distance of 1.0 m up the ramp,
the output work is:
Output work = output force x output distance
Output work = 1200 N x 1.0 m
Output work = 1200 J
Next, we need to find the input force and input work of the ramp.
The input force is the force applied by the man, which is 600 N.
The input work is the force applied by the input force over the distance it moves. Since the man moves a distance of 2.5 m along the ramp,
the input work is:
Input work = input force x input distance
Input work = 600 N x 2.5 m
Input work = 1500 J
Now we can calculate the efficiency and mechanical advantage:
Efficiency = (output work / input work) x 100%
Efficiency = (1200 J / 1500 J) x 100%
Efficiency = 80%
Mechanical Advantage = output force / input force
Mechanical Advantage = 1200 N / 600 N
Mechanical Advantage = 2
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how do you measure the amount of energy in each state of water
Water exists in three different states, namely solid ice, liquid and gaseous vapour. There are two different formulae, depending upon whether there is a loss or gain of heat, or change of state.
What is specific heat capacity and latent heat?The specific heat capacity is the amount of heat absorbed per unit mass of the substance for a temperature increase of one unit. Its units are given by J/kg K or cal/kg °C. It is useful in calculating the amount of heat lost or gained by a body (Q). The formula for Q is:
Q = m*c*ΔT
where, m is the mass
c is the specific heat capacity and,
ΔT is the change in the temperature of the body
This formula is used to measure the amount of energy required to raise or decrease the temperature of water without a change in its state.
On the other hand, latent heat is the energy released or absorbed when there is a change of state of matter. It is denoted by L. For a change of state, the heat energy Q is given by:
Q = m*L
Note that there is no change in temperature during change of state of matter, and only heat is released or absorbed.
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a boy pushes a lever down 2 meters with a force of 75 newtons. The box at the other end with a weight of 50 newtons move up 2.5 meters
A boy pushes a lever down 2 meters with a force of 75 newtons. The box at the other end with a weight of 50 newtons move up 2.5 meters. The efficiency of this machine is 83.33%.
What is efficiency?The energy lost during a machine's operation due to heat and friction is measured as the machine's efficiency. Given that work is the transformation of kinetic energy, a machine's efficiency can be expressed as the ratio of output work divided by input work less work wasted due to friction and heat. It is unitless.
Using the formula:
Efficiency=[tex]\frac{O}{I}[/tex]×100
where,
O is output work and,
I is the input work.
Work done= Force × displacement
Output work = 50 × 2.5 = 125J
Input work = 75 × 2 = 150J
Substituting the values and solving for efficiency:
Efficiency = 83.33%
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Complete question:
A boy pushes a lever down 2 meters with a force of 75 Newtons. The box on the other end weighs 50 Newtons and moves up 2.5 meters. What is the efficiency of this machine?
You throw a water ballon straight up with a velocity of 12 m/s. What is its maximum height
Answer:7.35 meters
Explanation:
Assuming that air resistance is negligible, we can use the kinematic equation:
h = (v^2)/(2g)
where h is the maximum height, v is the initial velocity, and g is the acceleration due to gravity (9.8 m/s^2).
Substituting the given values:
h = (12^2)/(2 × 9.8)
h = 7.35 meters
Therefore, the maximum height of the water balloon is approximately 7.35 meters.
A 6.00-kg block is sent up a ramp inclined at an angle =27.0∘ from the horizontal. It is given an initial velocity 0=15.0 m/s up the ramp. Between the block and the ramp, the coefficient of kinetic friction is k=0.40 and the coefficient of static friction is s=0.70.
What distance along the ramp's surface does the block travel before it comes to a stop?
The block travels 12.6 m along the ramp's surface before it comes to a stop.
What is velocity?Velocity is the rate of change of an object's position over time. It is a vector quantity, meaning it has both a magnitude and a direction. Velocity measures the speed of an object in a given direction and is usually represented by an arrow. Velocity is typically measured in units of meters per second.
To calculate the distance the block travels before coming to a stop, we need to calculate the time it takes for the block to come to a stop. This can be found using the equation:
t = (v-v0)/(a-μk×g×sinα)
Where t is the time it takes, v is the final velocity, v0 is the initial velocity, a is the acceleration, μk is the coefficient of kinetic friction, g is gravitational acceleration, and α is the angle of the ramp. Plugging in the given values, we get:
t = (0-15.0)/(-9.8-0.4×9.8×sin27.0)
t = 1.20 s
Now, to find the distance, we can use the equation:
d = v0×t + (1/2)×a×t2
Plugging in the given values, we get:
d = 15.0×1.20 + (1/2)×(-9.8)×1.202
d = 12.6 m
Therefore, the block travels 12.6 m along the ramp's surface before it comes to a stop.
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