• ### Someone please help with physics?

A constant electric field directed along the positive x-axis has a strength of 1.6 ✕ 103 N/C. (a) Find the electric force exerted on a proton by the field. N, along the x-axis (b) Find the acceleration of the proton. m/s2, along the x-axis (c) Find the time required for the proton to reach a speed of 1.04 ✕ 106 m/s, assuming it starts from rest.
A constant electric field directed along the positive x-axis has a strength of 1.6 ✕ 103 N/C. (a) Find the electric force exerted on a proton by the field. N, along the x-axis (b) Find the acceleration of the proton. m/s2, along the x-axis (c) Find the time required for the proton to reach a speed of 1.04 ✕ 106 m/s, assuming it starts from rest.
1 answer · Physics · 2 days ago
• ### Can someone please help me with physics?

Consider three charges q1 = 4.3 nC, q2 = 8.4 nC, and q3 = -3.4 nC, arranged in a triangle as shown below. (a) What is the electric force acting on the charge at the origin? N, ° counterclockwise from the negative x-axis (b) What is the net electric field at the position of the charge at the origin? N/C, ° counterclockwise from the... show more
Consider three charges q1 = 4.3 nC, q2 = 8.4 nC, and q3 = -3.4 nC, arranged in a triangle as shown below. (a) What is the electric force acting on the charge at the origin? N, ° counterclockwise from the negative x-axis (b) What is the net electric field at the position of the charge at the origin? N/C, ° counterclockwise from the negative x-axis
1 answer · Physics · 2 days ago
• ### Please help with physics, my teacher doesn't teach us.?

A DNA molecule (deoxyribonucleic acid) is 2.17 µm long. The ends of the molecule become singly ionized so that there is -1.60 ✕ 10-19 C on one end and +1.60 ✕ 10-19 on the other. The helical molecule acts as a spring and compresses 1.44 percent upon becoming charged. Find the effective spring constant of the molecule. N/m
A DNA molecule (deoxyribonucleic acid) is 2.17 µm long. The ends of the molecule become singly ionized so that there is -1.60 ✕ 10-19 C on one end and +1.60 ✕ 10-19 on the other. The helical molecule acts as a spring and compresses 1.44 percent upon becoming charged. Find the effective spring constant of the molecule. N/m
2 answers · Physics · 2 days ago
• ### Please help with physics.?

Two positive point charges on the y-axis, each of which has a charge of 3.0 ✕ 10-9 C, are located at y = +0.60 m and y = -0.60 m. Find the magnitude and direction of the resultant electric force acting on a charge of 7.7 ✕ 10-9 C located at x = 0.70 m on the x-axis. magnitude = N direction = ° clockwise from the +x axis
Two positive point charges on the y-axis, each of which has a charge of 3.0 ✕ 10-9 C, are located at y = +0.60 m and y = -0.60 m. Find the magnitude and direction of the resultant electric force acting on a charge of 7.7 ✕ 10-9 C located at x = 0.70 m on the x-axis. magnitude = N direction = ° clockwise from the +x axis
Physics · 2 days ago
• ### Why does my chest do this?

For 3 years now I have been having scores of symptoms that range from dizziness to chest pains and from chest tightness/heaviness to super fast/hard heartbeats. The thing that bothers me the most is the dizziness and I've been absent from school 42 times because of it. Recently, my chest has been feeling creaky when I lay down and breathe. It... show more
For 3 years now I have been having scores of symptoms that range from dizziness to chest pains and from chest tightness/heaviness to super fast/hard heartbeats. The thing that bothers me the most is the dizziness and I've been absent from school 42 times because of it. Recently, my chest has been feeling creaky when I lay down and breathe. It doesnt sound any different but I can feel and hear the creakiness. Does anyone know what this could be?
2 answers · Respiratory Diseases · 4 days ago
• ### Do colleges really care about what classes you take senior year?

I am a junior in high school and its that time of year where we chose our courses for senior year. Both sophomore and junior year i took all honors and AP history. Senior year I am planning on taking honors theology, honors english, honors pre-calc, honors french 4, aanatomy (my school doesnt offer honors) and honors us history. Would colleges care... show more
I am a junior in high school and its that time of year where we chose our courses for senior year. Both sophomore and junior year i took all honors and AP history. Senior year I am planning on taking honors theology, honors english, honors pre-calc, honors french 4, aanatomy (my school doesnt offer honors) and honors us history. Would colleges care if I don t take an AP class senior year?
3 answers · Higher Education (University +) · 4 days ago
• ### Please help with physic?

Assuming that λ = 678 nm, calculate the critical angles for the following materials when they are surrounded by Carbon Dioxide (a) zircon ° (b) fluorite ° (c) diamond
Assuming that λ = 678 nm, calculate the critical angles for the following materials when they are surrounded by Carbon Dioxide (a) zircon ° (b) fluorite ° (c) diamond
1 answer · Earth Sciences & Geology · 3 weeks ago
• ### Diagnose me?

So, I am a 17-year-old female and I have multiple chronic diseases. However, I was diagnosed with POTs a few months ago. Two of my dr.s think its not pots but two others think it is. Water and salt doesnt help and my symptoms are getting worse. One symptom (out of 53), is really bugging me. This is chest pain/hard to breathe. I know that shortness... show more
So, I am a 17-year-old female and I have multiple chronic diseases. However, I was diagnosed with POTs a few months ago. Two of my dr.s think its not pots but two others think it is. Water and salt doesnt help and my symptoms are getting worse. One symptom (out of 53), is really bugging me. This is chest pain/hard to breathe. I know that shortness of breath is very common with POTs patients, but when I can't breathe it's not like shortness of breath like when you walk up stairs or something, its like someone is squeezing my chest and I can't breath (kinda like when you hold your breath underwater and your chest starts to hurt and you can't breath). However, when I ask who has POTs about chest pain, they tell me they don't experience that. My chest feels really heavy like someone is sitting on it and I have to take very shallow breaths because I can't get a deep breath. This sometimes lasts for a week long without any relief. I never go to the ER because they are just going to tell me it's because of my POTs. I have a cardiologist appointment in two months, but my POTs appt isn't until 5 months from now (that was the soonest). Does anyone have any advice on how to relieve my chest pain and help me breath better? Laying down used to help my dizziness, but it doesn't anymore and it makes my chest pain/hard to breathe symptoms worse. Sorry for the long paragraph. Thank you!
1 answer · Respiratory Diseases · 2 months ago
• ### Physics help please?

An electric drill is turned on and the chuck exerts a constant torque of 4.0E-4 Nm to turn the drill bit through 9.0 revolutions. Find the rotational work done by the chuck.
An electric drill is turned on and the chuck exerts a constant torque of 4.0E-4 Nm to turn the drill bit through 9.0 revolutions. Find the rotational work done by the chuck.
2 answers · Physics · 3 months ago
• ### I have been dealing with dizziness and others symptoms for years with no diagnosis. Help.?

I am a 16 year old high school student who gets straight A's. Freshman year I started feeling dizzy and I would have to lay down or put my head against something to feel relief. I didn't think too much of it until it began to get worse everyday. I now suffer from many symptoms and I am dizzy everyday. My dizziness feels like I am swaying and... show more
I am a 16 year old high school student who gets straight A's. Freshman year I started feeling dizzy and I would have to lay down or put my head against something to feel relief. I didn't think too much of it until it began to get worse everyday. I now suffer from many symptoms and I am dizzy everyday. My dizziness feels like I am swaying and moving back and forth when I am still. It feels like I'm on a boat when I'm not. I get deep ear pains, constant ear ringing in both ears, super sensitive hearing (I can even hear my eyes move sometimes), I get extremely motion sick to the point where I cannot even ride in a moving vehicle such as a car, bus, or train (I take the bus to school so I'm dizzy everyday when I arrive to school), Ii get super nauseous, my vision tunnels and I go blind for a few seconds. Many things also trigger this dizziness such as loud noises, deep noises, high pitched noises, any type of motion, sudden body movements, reading textbooks, standing for a while, dancing, working out, playing sports. I am a very healthy and active teen. I drink at least 6 water bottles that contain 17 fluid ounces and I have a well balanced diet with plenty of salt. The dizziness gets so bad that I have to lay down or put my head against something to relieve it. It usually last for a few hours but sometimes it can last for a week and all I can do is lay in bed. I cannot concentrate in school because of this.
7 answers · Other - Health · 4 months ago
• ### Somebody please help with physics question.?

I tried 3 times and I can't get the answer. Here's the question. An unstable nucleus with a mass of 25.0 ✕ 10-27 kg initially at rest disintegrates into three particles. One of the particles, of mass 4.2 ✕ 10-27 kg, moves along the positive y-axis with a speed of 6.0 ✕ 106 m/s. Another particle, of mass 8.4 ✕ 10-27 kg, moves along the... show more
I tried 3 times and I can't get the answer. Here's the question. An unstable nucleus with a mass of 25.0 ✕ 10-27 kg initially at rest disintegrates into three particles. One of the particles, of mass 4.2 ✕ 10-27 kg, moves along the positive y-axis with a speed of 6.0 ✕ 106 m/s. Another particle, of mass 8.4 ✕ 10-27 kg, moves along the positive x-axis with a speed of 5.0 ✕ 106 m/s. (Assume that mass is conserved.) (a) Determine the third particle's speed. m/s (b) What is the direction of motion? ° (from the positive x-axis)
1 answer · Physics · 4 months ago
• ### Physics help?

A swimmer swims in still water at a speed of 5.00 m/s. He intends to swim directly across a river that has a downstream current of 2.91 m/s. (a) What must the swimmer's direction be? ° from straight across (b) What is the velocity relative to the bank? m/s
A swimmer swims in still water at a speed of 5.00 m/s. He intends to swim directly across a river that has a downstream current of 2.91 m/s. (a) What must the swimmer's direction be? ° from straight across (b) What is the velocity relative to the bank? m/s
1 answer · Physics · 6 months ago
• ### Help with physics?

A 1.81 m tall basketball player attempts a goal 10.1 m from a basket (3.05 m high). If he shoots the ball at a 45° angle, at what initial speed must he throw the basketball so that it goes through the hoop without striking the backboard?
A 1.81 m tall basketball player attempts a goal 10.1 m from a basket (3.05 m high). If he shoots the ball at a 45° angle, at what initial speed must he throw the basketball so that it goes through the hoop without striking the backboard?
2 answers · Physics · 6 months ago
• ### Please help with physics?

A golf ball with an initial angle of 40° lands exactly 228 m down the range on a level course. (a) Neglecting air friction, what initial speed would achieve this result? m/s (b) Using the speed determined in item (a), find the maximum height reached by the ball. m
A golf ball with an initial angle of 40° lands exactly 228 m down the range on a level course. (a) Neglecting air friction, what initial speed would achieve this result? m/s (b) Using the speed determined in item (a), find the maximum height reached by the ball. m
1 answer · Physics · 6 months ago
• ### Someone please help with AP European History!?

Discuss the changes and continuities of policies of the European Union from the early 1991 to present.
Discuss the changes and continuities of policies of the European Union from the early 1991 to present.
5 answers · History · 11 months ago
• ### Why does William the second bring up the Boers War?

What happened that created hostility between the two nations. What he does he state that examines his loyalty to Great Britain? This pertains to Kaiser William the Second"s The Daily Telegraph
What happened that created hostility between the two nations. What he does he state that examines his loyalty to Great Britain? This pertains to Kaiser William the Second"s The Daily Telegraph
Homework Help · 1 year ago
• ### What is the reasoning that William the second uses to justify his Nation’s expansion in comparison to England.?

This question pertains to The Daily Telegraph Affair interview with William the Second.
This question pertains to The Daily Telegraph Affair interview with William the Second.
3 answers · History · 1 year ago
• ### How do i use geometry in my everday life?

i have to write an essay on how geometry is used in my everyday life, but i dont use geometry everyday. what can i say?
i have to write an essay on how geometry is used in my everyday life, but i dont use geometry everyday. what can i say?
2 answers · Homework Help · 1 year ago
• ### Please help with chemistry!?

Rank these bonds from least polar, lowest EN difference, to most polar, highest EN difference. Ca-O H-F H-Cl N-N N-H
Rank these bonds from least polar, lowest EN difference, to most polar, highest EN difference. Ca-O H-F H-Cl N-N N-H
1 answer · Chemistry · 1 year ago
• ### Please help with chemistry!?

If a substance was nonpolar, how would it separate in chromatography.
If a substance was nonpolar, how would it separate in chromatography.
1 answer · Chemistry · 1 year ago