10/08/21

A basketball player makes a jump shot.
A basketball player makes a jump shot. The 0.616 kg ball is released at a height of 1.82 m above the floor with a speed of 7.24 m/s. The ball goes through the net 3.10 m above the floor at a speed... more
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10/08/21

Please help me with these Physics questions
Please help me with these Physics questionsUse the picture to determine the slope during phase B. Remember slope=m=(rise/run​)a. -2m/sb. 1.5m/sc. 2m/sd. 0 m/sNow observe this graph. What do you... more
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10/07/21

Consider the 47.0 kg mountain climber in the figure below.

(b) What is the minimum coefficient of friction between her shoes and the cliff?
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10/07/21

Mechanical Physics

You have a light spring which obeys Hooke's law. This spring stretches 2.76 cm vertically when a 2.10 kg object is suspended from it. Determine the following.(a)the force constant of the spring (in... more
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10/07/21

A builder tosses a shingle off of a 9.4 m high roof giving it an initial horizonal velocity of 7.2 m/s. What is the final vertical velocity of the ball?
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10/07/21

A. You are standing on the back of a pickup truck that is at rest, you are throwing banana forwards with a velocity of 10 m/s.

A. You are standing on the back of a pickup truck that is at rest, you are throwing banana forwards with a velocity of 10 m/s. 1. (Refer to situation A for your answer) If your friend is standing... more
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10/04/21

Why does heat not naturally flow from cold to hot?
Why does heat not naturally flow from cold to hot?Group of answer choicesThe average temperature of the universe is always increasingThere are many more ways to have energy evenly distributed than... more
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10/04/21

Which of the following processes involves heating up water by doing work on it?
Which of the following processes involves heating up water by doing work on it?Group of answer choicesStirring it vigorouslyPutting it in a microwave ovenExposing it to sunlightLighting a fire... more
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10/04/21

At sea level, water boils at 100° Celsius. Why can't boiling water get any hotter than this?
At sea level, water boils at 100° Celsius. Why can't boiling water get any hotter than this?Group of answer choicesThe process of boiling cools the water as fast as it is heated upThe Celsius scale... more
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10/04/21

Why is it you can stick your arm in an oven at 350° F for a short time and feel no ill effects, but if you touched the metal walls of the oven you'd be instantly burned?
Why is it you can stick your arm in an oven at 350° F for a short time and feel no ill effects, but if you touched the metal walls of the oven you'd be instantly burned?Group of answer choicesThe... more
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09/29/21

Describe the motion of the marble. Be sure to explain fully, addressing the relevant underlying material.
A spring loaded cannon on wheels is traveling along a flat track at constant speed. It shoots a marble directly upward into the air. Describe the motion of the marble. Be sure to explain fully,... more
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09/29/21

Which object will hit the ground first, the one projected horizontally or the one dropped?
At the instant a horizontally projected object is launched, an identical object is dropped. Which object will hit the ground first, the one projected horizontally or the one dropped? Be sure to... more
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09/29/21

physic question what is the energy difference between these two energy levels in Joules?
If one energy level is at -3.30 eV and the next one is at -8.10 eV, what is the energydifference between these two energy levels in Joules?
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09/26/21

Write a creative writing piece please if anyone can help :)

Write a creative writing piece on the famous chemist John Dalton
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09/26/21

1-D motion homework help
A rescue helicopter is hovering over a woman whose boat has sunk. One of the rescuers tosses a life preserver straight down to the woman with an initial speed of 1.45m/s and notices that it takes 1... more
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09/25/21

What is (just) the frictional force on the box?
A 50 kg box is sliding down a ramp of 30 o. The frictional coefficient is k=0.2. What is (just) the frictional force on the box? cos(30 o) = 0.866 sin(30 o) = 0.5 A.  424.34... more
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09/24/21

A sign is hanging from three ropes as shown in the figure. The tension in the lefthand rope, T1, is 436.86 N. Angle θ1=62.6°, and angle θ2=53.5°.
A sign is hanging from three ropes as shown in the figure. The tension in the lefthand rope, T1, is 436.86 N. Angle θ1=62.6°, and angle θ2=53.5°.What is the tension, T2, in the righthand rope?What... more
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09/21/21

Newton's Laws of Motion
A 23.0 kg child is riding a playground merry-go-round that is rotating at 45.0 rev/min. What centripetal force (in N) must she exert to stay on if she is 1.50 m from its center? (Enter a... more
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09/21/21

An object glides on a horizontal tabletop with a coefficient of kinetic friction of 0.3. If it comes to rest after 1.3 seconds, what was its initial velocity?
An object glides on a horizontal tabletop with a coefficient of kinetic friction of 0.3. If it comes to rest after 1.3 seconds, what was its initial velocity?
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09/21/21

I need help with this questions
1.) A force of 20 N acts towards the west. Another force acts at the same point so that the resultant of the two forces is zero. What is the magnitude and direction of the second force?2.) A force... more
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09/21/21

Teratogenic studies of insulin glargine were undertaken in rats at doses up to 0.36 mg/kg/day. Solve by using equivalent expressions.
The choices are(a) 360 cg/lb/day(b) 792 mcg/lb/day(c) 360 mg/lb/day(d) 163.6 mcg/lb/day
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09/21/21

Pharmacy students, traveling to attend a national pharmacy meeting, were on an airplane with an average air speed of 414 miles per hour. Which is the closest equivalent air speed?
(a) 6 mi/min(b) 257 km/h(c) 666 km/h(d) 180 m/s- Show the solutions by using equivalent expressions.
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09/20/21

Newton's Laws Applications
Semi-trailer trucks have an odometer on one hub of a trailer wheel. The hub is weighted so that it does not rotate, but it contains gears to count the number of wheel revolutions—it then calculates... more
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09/20/21

Newton's Laws Applications
Helicopter blades withstand tremendous stresses. In addition to supporting the weight of a helicopter, they are spun at rapid rates and experience large centripetal accelerations, especially at the... more
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09/20/21

Wil-E-Coyote drops a bowlling ball off a cliff to try to catch the Roadrunner. The cliff is 132 m high. What is its impact velocity in m/s?
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