Answer:
The answer is A. Which is true
How would you describe the relationship of an object’s speed
Answer: Average speed is distance divided by time interval for the distance traveled.
Explanation: I hope that helped!
what's ur father put is ur name
la) What is meant by the term Basic Quantities.
Answer:
A basic quantity is basically the physical quantity that can not be defined in terms of other quantities.
Explanation:
A basic quantity is basically the physical quantity that can not be defined in terms of other quantities.
Some of the names of the basic quantities include:
Mass, denoted by the symbol 'm', with S.I. unit 'kg'Length, denoted by symbol 'l', with S.I. unit 'm'Time, denoted by symbol 't', with S.I. unit 's'Current, denoted by 'I', with S.I. unit 's' 'A'Temperature, denoted by 'T', with S.I. unit 'K'Amount of substance, denoted by 'n', with S.I. unit 'mol'Luminous Intensity, denoted by 'Iv', with S.I. unit 'cd'A basic quantity is chosen arbitrarily.ReadWorks
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Name:
1. According to the text, what are plastics made of?
A. specially treated silicon
B. negatively charged particles
C. long chains of carbon molecules
D. a standard photovoltaic cell
Answer:
c. long chains of carbon molecules
Which example demonstrates constant speed with changing direction?
Uniform circular motion is defined as the constant-speed movement of an object in a circle.
What is Speed?The definition of speed is. The rate at which an object's position changes in any direction. Speed is defined as the ratio of distance traveled to time spent traveling.
Speed is classified as a scalar quantity because it has only one direction and no magnitude.
In summary, the act of turning away or in the opposite direction. reversal, reverse, reversion, turnabout, turnaround.
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A 5-N force is applied to a 3-kg ball to change its velocity from +9 m/s to +3 m/s. What is the impulse?
Answer:
-18 Nm
Explanation:
Impulse = Change of Momentum
I = ∆p
I = mv2 - mv1
I = 3 x 3 - 3 x 9
I = 9 - 27
I = -18 Nm
2.
Which of the following gear speeds
makes motor vehicle move faster?
a) 0
b) 11
c) 2
d) 3
e) 4
Answer:
e.4
Explanation:
why it is important to have regular supervision of the weights and measurements in the marked?
Explanation:The fundamental answer is that without regular supervision of, and definitions of, weights and measures, commerce and exchange would be impossible, and there would be no market whatsoever for anything.
Explanation:
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please help mee I’ll give brainliest
Answer:
It has potential energy and then the eg=nergy goes to the bug killing it becay=use of the force
Explanation:
"use the force luke"
Answer:
It has potential energy and then the energy goes to the bug killing it because of the force
Explanation:
please actually answer the question
a body complete 400 j work in 5 second.what is its power
Answer:
80 watts
Explanation:
power= energy / time
400/5 = 80
_______is a speed in a certain direction.
a. Acceleration
b. Friction
C. Momentum
d. Velocity
give reason: the liquid pressure varies with the depth.
can I get the answer fast??
Answer:
This is due to an increase in hydrostatic pressure, the force per unit area exerted by a liquid on an object. The deeper you go under the sea, the greater the pressure of the water pushing down on you.
True or False. The speed of light is sped up by dense media.
Which substance is a heterogeneous mixture?
Cheddar cheese
clean air
Granola bar
Drinking water
Answer:
Granola Bar
heterogeneous: Makeup of the object can be separated: In this case; oats, nuts, fruit etc.
Explanation:
All the other options are homogenous.
Cheddar cheese: consistent make-up
Drinking water: H20 plus sanitizers like chlorine but is not separable
Clean air: Oxygen and nitrogen mixture
The water-balloon weighs 4.9 N. gravitational field strength = 9.8 N/kg Calculate the mass of the water-balloon
Answer:
0.5kg
Explanation:
Mass = Weight / Gravitational field strength
Mass = 4.9 / 9.8
Mass = 0.5
hELP PLS ITS BEEEN A DAY AND A HALF im lit rally stuck pls i lost 10 points and didnt get the answer help me pls
Answer:
The height of the hurdler when he clears the hurdle is approximately 1.1045 meters (high)
Explanation:
The given parameters are;
The distance the hurdler is from the hurdle, d = 0.535 m
The velocity with which the hurdler jumps, u = 6.82 m/s
The angle at which the hurdler jumps, θ = 67.9°
The horizontal component of the velocity is uₓ = u × cos(θ)
∴ uₓ = 6.82 × cos(67.9°) ≈ 2.566 m/s
The time it takes, t, the hurdler to get to the hurdle horizontally 0.535 m away is given as follows;
Time, t = Distance/Velocity = d/uₓ = 0.535 m/(2.566 m/s) ≈ 0.2085 s
t ≈ 0.2085 s
The kinematic equation of vertical motion, under gravity can be presented as follows;
h = [tex]u_y[/tex]·t - 1/2·g·t²
Where;
h = The height reached by the hurdler in time t
[tex]u_y[/tex] = The vertical component of the velocity = u × sin(θ)
g = The acceleration due to gravity
∴ [tex]u_y[/tex] = 6.82 m/s × sin(67.9°) ≈ 6.3189 m/s
[tex]u_y[/tex] ≈ 6.3189 m/s
Substituting the known values gives;
h = 6.3189 × 0.2085 - 1/2×9.8×0.2085² ≈ 1.1045 m
The height of the hurdler when he clears the hurdle, h ≈ 1.1045 m.
How are computers used in education and entertainment? List them.
Answer:
The computers used in education and entertainment are:
Explanation:
Analog computer,Digital COMPUTER,Hybrid Computer
1.Explain how a beach ball and a bowling ball can be similar in sizebut differ in physical properties Be sure to discuss densitymass colorsize, and volume
2. How would each behave if you tossed them into air?
Answer:
well a beach ball could be any size at all a bowling ball is usually the same size the weight difference is inside of them inside the beach ball there's air although in a bowling ball there's cement or rock i don't know what they put inside the ball but anyway the bowling ball a lot higher density o it has more volume so the bowling ball is a lot heavier than just a beach ball
Explanation:
The rate of acceleration for a basketball that is falling to the ground is 9.8 meters per second. The force exerted on the basketball is 29.4 Newtons. What is the mass of the object?
What causes earth's magnetic field to flip?
Answer:
The generation of Earth's magnetic field starts at its very center. Some researchers believe polarity reversals are caused by a disturbance in the balance between Earth's rotation and the temperature at the core, which alters the fluid motion of the liquid iron, but the exact process remains a mystery.
How to find pressure when mass and area is given?
Answer:
Pressure and force are related, and so you can calculate one if you know the other by using the physics equation, P = F/A. Because pressure is force divided by area, its meter-kilogram-second units are newtons per square meter, or N/m2.
Explanation:
Do you not feel the pressure when mass is on you?
A 1405 kg car is accelerating at
1.77 m/s? Its engine creates a forward
force of 3150 N, and air resistance
creates a backward force. What is
the magnitude (+) of the force of
air resistance or the car?
(Unit = N)
Answer:
fair = 663.15 [N]
Explanation:
To solve this problem we must use Newton's second law, which tells us that the sum of forces on a body is equal to the product of mass by acceleration.
∑F = m*a
where:
∑F = forces applied [N]
m = mass = 1405 [kg]
a = acceleration = 1.77 [m/s²]
In this way, we have two forces, the one that develops the engine to move the car and the resistance force of the air that opposes the movement of the car.
[tex]3150-f_{air}=m*a\\3150-f_{air}=1405*1.77\\f_{air}=3150-2486.85\\f_{air}=663.15[N][/tex]
guys HELP PLS find the probability
Answer:
45/139
Explanation:
there are 45 green candies that you could pick out of a total of 139 candies.
In a college homecoming competition, eighteen students lift a sports car. While holding the car off of the ground, each student exerts an upward force of 400 newtons. What is the mass of the car in kilograms?
734.19567 Kilogram Force
Explanation:
7200 Newton = 734.19567 Kilogram Force
The sum of all forces acting on an object is what is referred to as _________
Group of answer choices
Mass
Net Force
weight
Normal force
Please help me with this question
Answer: m∠P ≈ 46,42°
because using the law of sines in ΔPQR
=> sin 75°/ 4 = sin P/3
so ur friend is wrong due to confusion between edges
+) we have: sin 75°/4 = sin P/3
=> sin P = sin 75°/4 . 3 = (3√6 + 3√2)/16
=> m∠P ≈ 46,42°
Explanation:
A basketball player jumps straight up with a speed of 14 m/s. How high did the player jump?
Answer:
The basketball player jumped 10 m high.
Explanation:
Vertical Launch Upwards
In a vertical launch upwards, an object is launched vertically up without taking into consideration any kind of friction with the air.
If vo is the initial speed and g is the acceleration of gravity, the maximum height reached by the object is given by:
[tex]\displaystyle h_m=\frac{v_o^2}{2g}[/tex]
The basketball player jumps up with a speed of vo=14 m/s. The maximum height is:
[tex]\displaystyle h_m=\frac{14^2}{2*9.8}[/tex]
[tex]\displaystyle h_m=\frac{196}{19.6}=10[/tex]
The basketball player jumped 10 m high.
two sources of error and precaution in the centre of gravity experiment
Answer:
The answer to this question is given below in this explanation sections.
Explanation:
The weight of an object is concentrated at the center of gravity.The term center of gravity is used interchangeably with center of mass.For a symmetrical object the center of mass is located at the geometric center of the object.If the object is not symmetric we can determined the center of mass using the mentioned below.
Materials:
cardboardweight(washer,bolt,or fishing weight)hole punchpencilProcedure:
Cut the cardboard into a strange shape.Do not use a circle,square,rectangle,or any other common geometric shape.Punch a hole near the edge of the cut-out cardboard piece and hang it from a nail.Place the weight, a washer or bolt, on a thread and tie it off.Hang the thread and weight from the nail in front of the cardboard.use a pencil to draw a plumb line down the cardboard where the thread touches.This mark your center line from that hanging point.conclusion:
What would happen to the center of gravity of the shape if you were to spin it freely?
center of gravity experiment:
Balance a ruler with a hammer.Take a rubber band or string and make a loose loop around the hammer and ruler. Make sure the end of the hammer is touching the ruler,and then positions the ruler at the edge of the table.Balance two forces with a toothpick.A common magic trick using the properties of center of gravity.The two forks are balanced on the edge of the glass by a toothpick. Stand with your back and feet against a wall.Have someone place quarter on the floor at your feet.Try to pick it cup.Most people cant make these adjustments.Stand against a wall sideways with your arm and leg touching the wall,with nothing to from the out away hold onto.Try to lift your other leg straight out away from the wall.you wont be able to do it.The girls away win chairs lifting challanges place dining chairs against a wall.Bend over the chair so that your head touches the wall and you upper body is parallel to the floor.lift the chair to your chest to your chest and then try to stand up.Question 24 (1 point)
A 85 kg boy is riding his bicycle in circles with a radius of 7.2 meters. It takes him 6
seconds to make ones revolution. What is his velocity?
730 m/s
0.53 m/s
1.25 m/s
4:
7.54 m/s
A boy of mass 85 kg is riding a bicycle in a circle with a radius of 7.2 meters, and it takes 6 seconds to make one revolution, then his velocity will be equal to 7.54 m/s.
What is tangential velocity?The movement of an object along the circle's edge which path is always at the tangent to any specific point on the circle is described by tangential velocity.
As a result, tangential velocity is the amount of motion along a circle's edge that may be measured at any given time.
The speed at any location that really is tangent to the rotating wheel is quantified as the tangential velocity in a circular motion. The connection between rotational acceleration and tangential velocity is expressed by the formula. The part of movement along the circle's edge that can be detected at any time is called tangential velocity.
The given data in the question,
Radius, r = 7.2 meters.
Time, t = 6 seconds.
v = 2πr / t
v = 2π(7.2)/6
v = 7.54 m/s.
Therefore, the velocity of the boy is 7.54 m/s.
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