Discussion List
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Secondary III • 14d
What are some devices that rely on magnetism or electromagnetism?
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Secondary V • 15dJe ne comprends pas comment faire cette question. Merci beaucoup.
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Secondary V • 19dIn the answer key they had water on top of the boundary and ice at the bottom. I assumed that since water is heavier than ice i inverted its position. The arrows , rays and etc are correct but as i said previously it's inverted. Would this be considered wrong?
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Secondary V • 1mo.For question 1.c Chapter 3 Projectiles : I did like they did to solve for t by using the Vfx formula last time (b). Unfortunately they used the quadratic formula this time... The opposite of what I did...I'm lost....🤦♂️ Here's my work below..
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Secondary V • 1mo.For question 1. c I did like SOFAD do last time, to solve for t from Vfx formula and they used the quadratic formula...🤦♂️.
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Secondary V • 1mo.Any suggestions for my error on b? Thanks.
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Postsecondary • 1mo.I’m having a lot of trouble when two ropes help eachother to hold something like how do I know which rope will hold how much on the x axis in this question?
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Postsecondary • 1mo.I really don’t know how to approach this
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Secondary V • 1mo.Bonjour,
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je fais des Exercices de graphique
X en fonction de t , vitesse en fonction du temps et acceleration en fonction du temps
comment puis je etre sur de mes reponses si je n’es pas de corriger ?
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Secondary V • 1mo.I'm trying to understand the difference between URM/UARM and Projectiles. It seems as if the difference is that there is a different kind of force that is pushing the object. There was a question in UARM of a child pushing an a ball up a hill and it coming back down once hitting the garage door. It's confusing to me that this is not a projectile. I get a projectile is an example of an arrow being launched by a bow, and golf ball being hit by a golf club, a bullet being shot by a barrel, but why is this different from a child pushing a ball up a hill against the garage? Is it because UARM can be guided but not a projectile? So the child throwing the ball is considered to be guiding the object? Same situation of the pitcher throwing a baseball, the ball being hit by the batter and coming back to him.
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Secondary V • 1mo.Hello,
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Thanks
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Secondary V • 2mo.I think I found another error from SOFAD... Anything times 0 is 0. The velocity has to be 1 m/s. Right?
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Secondary V • 2mo.Can you show me how they got to this answer. It's been too long since I had to change exponents.
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Secondary V • 2mo.How much work do I have to show in order to get all my points. I need at least 90 percent on these physic exams if I want to have a chance at getting into the physiotherapy technologists program so every detail counts. At the same time I can be a bit slow so I don't want to end up not finishing the exams because I'm trying to do every single step that may not be necessary. How would you have gone through this problem to get full points? I did three calculations here. Should I have done 4 including the t subscript f and t subscript i? Or the step after subtracting 8 minus 2 seconds would have been more important?
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Thanks,
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Secondary V • 2mo.Hello,
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I understand that the arrow represents a vector but I still don't understand why the book shows one with the arrow and the other not.
Thank you,
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Secondary V • 2mo.By the way, I changed my answer. I forgot to add them up . Thanks.
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Secondary III • 2mo.Quelle est la définition d'un conducteur électrique?
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Secondary IV • 2mo.- Une fille lance un caillou dans un puits profond à 4,0 m/s [bas]. Le caillou frappe l’eau 2,0 secondes plus tard.
- À quelle profondeur se trouve la surface de l’eau du puits?
- Quelle est la vitesse vectorielle moyenne du caillou?
- Combien de temps après avoir été lancé faut-il au caillou pour acquérir la vitesse trouvée en b?
- Quelle est la vitesse vectorielle du caillou lorsqu’il frappe l’eau?
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Secondary V • 2mo.Détermine la profondeur de l’eau si un sonar qui fonctionne par écho reçoit son retour de signal en 870 ms et que la vitesse du son dans l’eau est de 5 300 km/h.
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Secondary V • 2mo.La température de l’air est de 20 degrés Celsius. Tu nages sous l’eau lorsque tu entends le bruit d’un bateau. Puis 3,5 s plus tard, tu entends le bruit d’une collision. Si la vitesse du son dans l’eau est de 1450 m/s, combien de temps après toi ton ami sur le quai à côté de toi entend-il le bruit de la collision?
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Secondary V • 2mo.Le ton du son d’une voiture diminue de 10%. Si la température est de 22 degrés Celsius, quelle est la vitesse de la voiture?
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Secondary V • 2mo.On tient un diapason de 1024 Hz près d’une colonne d’air fermée à 30 degrés Celsius. Quelle est la longueur minimale de la colonne d’air qui résonne à cette fréquence?
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Secondary V • 2mo.- On tient un diapason vibrant à une fréquence de 950 Hz près de l’extrémité d’une colonne d’air ouverte qui résonne à son premier mode de vibration à 25 degrés Celsius.
- Quelle est la longueur d’onde du son produit?
- Quelle est la longueur du tube en centimètres?
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Secondary V • 2mo.On tient un diapason au-dessus d’une colonne d’air fermée réglable. On établit que la différence entre le 2e et 5e ventre est de 90,0 cm. Quelle est la fréquence du diapason si l’expérience est réalisée dans un laboratoire où la température est de 25,0 degrés Celsius.
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Secondary V • 3mo.how to do distance and displacement
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Secondary IV • 3mo.quelle est l'indice de refraction d'une substance si la vitesse de la lumiere dans la matiere esst 1.80 x 10^8 m/s?
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Grade 3 • 3mo.Comment ton corps marches
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Secondary I • 3mo.Présentation de réfrigérateur
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-nommer tout les sources d’énergies
-nommer tout les formes d’énergie convertie et transmise,
-faire le diagramme de conversion avec tout les éléments.
Tout cela doivent être précis avec tout les mots scientifiques mais les autre vocabulaires doivent être simple mais détaille.
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Secondary V • 3mo.Bonjour,
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merci en avance
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Grade 6 • 3mo.pouvais vous m,aidez a AUGMANTER MA moyenne