My homework says-Explain why weight would be different on different planets by talking about gravity.
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The force of gravity between two objects always involves the product of
both of their masses.
"Weight" is the force of gravity between a planet and an object on its surface,
so it depends on both masses.
When a rock, a space probe, or an astronaut goes to a different planet, its/his
mass doesn't change, but the mass of the body they're standing on is different.
So the weight of the rock or the astronaut is different from what it is on Earth.
So, this formula clearly depicts that Weight of any object depends on mass of that object as well as on the gravitational acceleration. So, the lesser gravitational acceleration on Moon makes an object weigh lighter on Moon than on Earth. Similarly it is true for different planets also.
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Answer:amplitude
Explanation:
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ball drops 45m under g=10m/s/s
45=1/2x10xt^2 ... application of kinematic equaion from rest
90/10=t^2
t=3
24.0 m in 3 secs => 8m/s no air resistance
Final answer:
The ball's initial speed is calculated using the principles of projectile motion. First, the time it takes for the ball to hit the ground is found using the vertical distance and acceleration due to gravity. the initial speed to be approximately 7.9 m/s.
Explanation:
The problem describes a case of projectile motion, a common topic in physics. Since the ball is thrown horizontally, the initial vertical velocity of the ball is zero. We're given that the horizontal distance covered is 24.0 m and the vertical distance is 45.0 m.
Because the horizontal and vertical motions are independent, we can use the equations of motion to solve the problem. First, we have to find the time it takes for the ball to hit the ground. Using the equation of motion
"y = 0.5*g*t²",
where y = 45 m is the vertical distance, g = 9.8 m/s² is the acceleration due to gravity, and t is the time in seconds. Solving for t gives us the square root of (2*y/g), which is approximately 3.03 seconds.
Second, we use this time to find the initial speed of the ball. The horizontal distance covered x = 24.0 m is equal to the product of the time it's been travelling and its initial horizontal speed (v = x/t). Using the time from the previous step, we can find the initial speed to be approximately 7.9 m/s.
Learn more about Projectile Motion here:
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Answer: Radio waves is a type for wave that is used to transmit television and radio programmes, while microwaves can be used for phone communication.
Explanation: Radio waves and microwaves are types of electromagnetic radiation that has the longest wavelengths and the lowest frequency and it carries the least amounts of energy. This causes it to interact with mostly nothing as it travels, therefore it is just easier to transmit information as there is no disturbance in the transmittion.
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The gravitational force on the car is the force popularly known
as the car's "weight". Its magnitude is
(9.8 m/s²) times (the car's mass, in kilograms) .
The unit of this quantity is [newton] .