Login
Premium
Home Question Bank Physics Archive 2025 January 22

Physics Questions from Jan 22,2025

Browse the Physics Q&A Archive for Jan 22,2025, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

error msg
2. How does earth orbits around Sun? 12. An 8 g bullet is fired from a rifle. The bullet passes through a 10 cm plank. This reduces the bullet's velocity from \( 400 \mathrm{~m} \cdot \mathrm{~s}^{-1} \) west to \( 300 \mathrm{~m} \mathrm{~s}^{-1} \) west. a) Calculate the bullet's initial momentum. b) Calculate the bullet's final momentum. c) Calculate the bullet's change in momentum. d) Draw a labelled vector diagram to illustrate the bullet's initial, final and change in momentum vectors. 11. A \( 0,1 \mathrm{~kg} \) bouncy ball is dropped. It hits the ground at 8 nts : The ball bounces upward with a speed of \( 6 \mathrm{~m}^{-1} \) ? a) Calculate the ball's change in momentum. b) Draw a labelled vector diagram to illustrate the initial, final and change in momentum vectors. 6. A learner throws a \( 56,7 \mathrm{~g} \) tennis ball horizontally at \( 10 \mathrm{~m} \cdot \mathrm{~s}^{-1} \) and it rebour of sticky putty, having the same mas the same velocity. The putty sticks to length of time. a) Which ball experiences the grea b) Which ball experiences the grea 7. A net force is required to stop a 100 factor would the net force acting on a) the car was stopped in double tl b) the car was stopped in 1 tenth o c) the car was travelling at double t In Physics, acceleration of an object can be found using the formula \( a=\frac{v-u}{t} \), where \( a \) is the acceleration, \( v \) is the final velocity, \( u \) is the initial velocity, and \( t \) is time. Which equation correctly solves for the initial velocity? A \( u=a t-v \) B \( u=\frac{a}{t}-v \) C \( u=\frac{t}{a}-v \) D \( u=v-a t \) How much force does it take to accelerate a 2240 kg car from a stop to \( 25.0 \mathrm{~m} / \mathrm{s} \) in 13.0 seconds? \( \left(4.30 \times 10^{3} \mathrm{~N}\right) \) 4. Now set the slit width to 1600 nm . How does the screen intensity change? DES 3. particle describes \( S H M \), centre \( O \) of amplitude 3 m and passes through a point at a distance of 1.5 m from \( O \) on two succasions at 2 seconds apart. Find the two possible periods of oscillation. 11. Une lampe, soumise à une tension continue de 12 V , consomme une énergie électrique de 24 Wh pendant une durée de 4 h . a- Déterminer la puissance électrique reçue par cette lampe. b- En déduire l'intensité du courant qui la traverse. 10 Un fer à repasser, soumis à une tension de 220 V , est traversé par un courant d'intensité \( \mathrm{I}=4 \mathrm{~A} \). a- Calculer la puissance électrique reçue par cet appareil. b- Quelle énergie reçoit-il s' il a fonctionné pendant 3 h ?
Prev 1 2 3 4 5 6
...
19 Next
1 2 3 4 5 6
...
19
Prev Next
Study can be a real struggle
Why not UpStudy it?
Select your plan below
Premium

You can enjoy

Start now
  • Step-by-step explanations
  • 24/7 expert live tutors
  • Unlimited number of questions
  • No interruptions
  • Full access to Answer and Solution
  • Full Access to PDF Chat, UpStudy Chat, Browsing Chat
Basic

Totally free but limited

  • Limited Solution
Welcome to UpStudy!
Please sign in to continue the Thoth AI Chat journey
Continue with Email
Or continue with
By clicking “Sign in”, you agree to our Terms of Use & Privacy Policy