4,374 Answered Questions for the topic Science

11/11/20

Find the sprinter's linear momentum (in kg · m/s). (Enter the magnitude.)
A sprinter with a mass of 83 kg reaches a speed of 9 m/s during a race. Find the sprinter's linear momentum (in kg · m/s). (Enter the magnitude.)
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11/11/20

what factor does the amount of mechanical energy stored in the spring change?
A spring is stretched by an initial amount from its relaxed state. If the spring is then stretched by three times that amount from its relaxed state, by what factor does the amount of mechanical... more
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11/11/20

Compute how much kinetic energy was "lost" in this inelastic collision.
A 9,100-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck and car are locked together after the collision and move with speed 8 m/s. Compute how much kinetic energy was... more
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11/11/20

What is its speed (in m/s)?
A loaded gun is dropped on a frozen lake. The gun fires, with the bullet going horizontally in one direction and the gun sliding on the ice in the other direction. The bullet's mass is 0.04 kg, and... more
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Science Medical

11/11/20

why can i push my stomach out 2 ways
i can push it out the normal way but i can also push in between my belly button and ribs out quite far. i could do this for as long as i could remember but i’m just wondering what it is.
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Science

11/10/20

What is F=G M1 times M2 over d2?
I need this today!!!
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Science Physics

11/10/20

physics question?
An object is projected upward with a 30° launch angle from the ground and an initial speed of 60 m/s. For how many seconds will it be in the air? How far will it travel horizontally? Assume it... more
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Science Physics

11/10/20

physics question
so... the answer is t=2.04 and y=20.40 but idk how to do this:An object is projected upward with a 30 degree launch angle and an initial speed of 40m/s. How long will it take for the object to... more
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11/10/20

Write the kinetic, potential and total energy of a baseball having a mass of 0.145kg held 10 meters above the ground.
Write the kinetic, potential and total energy of a baseball having a mass of 0.145kg held 10 meters above the ground. The baseball was released under the influence of gravity on Earth and... more
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Science English Essay

11/09/20

Ideas for essay tittle
Hi,I have been asked to create an essay and I want to write about sleeping sickness.I have the outline:what it is, how it spreads, how this affects public health and the current preventions.But I... more
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Science Biology

11/09/20

Which of these describes the similar functions of capsids and nuclear membranes?
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11/09/20

What does skeletal muscle innervation meaning ?
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Science Geology

11/08/20

Starting from a wall outlet, trace back the source of energy as far as you can (Hint: At some point, the energy in electricity comes from something else, and so on, and so on. )
Starting with a wall outlet, trace back the source of energy as far as you can (Hint: At some point, the energy in electricity comes from something else. There is an ultimate source of the energy!)
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11/08/20

What is the acceleration experienced by passengers on this ride in g's?
The Kingda Ka roller coaster in New Jersey is the world's tallest ride of its kind. As the passenger cars are launched from rest at the start, they are accelerated uniformly to a speed of 57... more
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11/08/20

How far does the jet travel during the 7 s?
A jet aircraft with a mass of 4,400 kg has an engine that exerts a force (thrust) equal to 60,200 N.(a) What is the jet's acceleration when it takes off? (Give the magnitude.)(b)What is the jet's... more
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11/07/20

What is the force in pounds that acts on him during the launch phase of this ride? 
The Kingda Ka roller coaster in New Jersey is the world's tallest ride of its kind. As the passenger cars are launched from rest at the start, they are accelerated uniformly to a speed of 57... more
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11/07/20

How far does the jet travel during the 7 s?
A jet aircraft with a mass of 4,400 kg has an engine that exerts a force (thrust) equal to 60,200 N.What is the jet's acceleration when it takes off? (Give the magnitude.)What is the jet's speed... more
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11/07/20

What is the force in pounds that acts on him during the launch phase of this ride?

The Kingda Ka roller coaster in New Jersey is the world's tallest ride of its kind. As the passenger cars are launched from rest at the start, they are accelerated uniformly to a speed of 57... more
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11/07/20

 What is the net force on the motorcycle?
A motorcycle and rider have a total mass equal to 375 kg. The rider applies the brakes, causing the motorcycle to accelerate at a rate of −6 m/s2. What is the net force on the motorcycle? (Indicate... more
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11/07/20

Find the elephant's weight in newtons.
The mass of a certain elephant is 5,567 kg.Find the elephant's weight in newtons.Find its weight in pounds.
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11/07/20

A child weighs 339 N. What is the child's mass in kilograms?
A child weighs 339 N. What is the child's mass in kilograms?What is the child's mass in slugs?
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11/07/20

What is the acceleration of the jet in m/s2?
On aircraft carriers, catapults are used to accelerate jet aircraft to flight speeds in a short distance. One such catapult takes a 17,600-kg jet from 0 to 68 m/s in 2.6 s. (Assume the catapult... more
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Science Biology

11/07/20

Scientific question
Hi, I have been provided with some data (these experiments were repeated every year for 3 years):Gender, if you smoke, alcohol intake, age, if you have a healthy diet with measurements including:... more
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11/07/20

What is the effect of artificial electric stimulation on muscle atrophy?
Does it completely reverse atrophy? How (intracellular mechanisms)?
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11/07/20

What is the net force on the motorcycle?
A motorcycle and rider have a total mass equal to 375 kg. The rider applies the brakes, causing the motorcycle to accelerate at a rate of −6 m/s2. What is the net force on the motorcycle? (Indicate... more
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