12,726 Answered Questions for the topic physics

Physics

09/14/22

a sailboat is travelling north at 10km/h, relative ti the water. The water is flowing north at 5km/h. What is the velocity of the boat relative to ground?
what is the solution?
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Physics

09/14/22

A boat (with a flat bottom) and its cargo weigh 8,000 N. The area of the boat's bottom is 5 m2. How far below the surface of the water is the boat's bottom when it is floating in water? Find m
A boat (with a flat bottom) and its cargo weigh 8,000 N. The area of the boat's bottom is 5 m2. How far below the surface of the water is the boat's bottom when it is floating in water? Find m
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Physics Calculus

09/14/22

using the quadratic formula for projectile motion
if H= 0= t2-(2V0/g)t - (2h0/g) and we want to solve for t,how is the quadratic formula for the projectile t1= Vo/g + - sqrt ( (Vo/g)2 + 2ho/g )I'm confused about where the 2 on b went inside the... more
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Physics Math

09/14/22

Physics question
A car making a 110.0 mi journey travels at 46.9 mi/hr for the first 24.7 mi. At what speed must it travel during the rest of the journey so that the average speed for the entire trip is 78.5 mi/hr?
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Physics Math Angular

09/13/22

The initial angular speed when turned off and the angular deceleration.
A Turbine is rotating at constant rate, when turned off it deccelerates at a constant rate.The Turbine makes 5 complete rotations in the first second after it is switched off, it then takes another... more
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Physics

09/13/22

, describe a trip that has a (scalar) distance of 400 meters but the magnitude of the resultant displacement vector is 0 meters.
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Physics

09/13/22

how long will it take a ball to reach its highest point
ball is thrown straight up in the air with initial speed of 7.0 m/s
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Physics Math Algebra 2

09/12/22

Physics question----
A car is traveling down a highway at a speed of 100 km/h. How many kilometers does the car travel in 24 minutes?A car travels a distance of d in 60 seconds and a distance of 2d in 120 seconds. At... more
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Physics Math Science Biology

09/12/22

Senior High school Project ideas - Scientific

Hi! I’m doing a big project in Senior high school right now that plays a huge part in my graduation and would appreciate some help!I have to come up with an idea/subject that includes a good... more
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Physics

09/12/22

Please show work!
Three vectors are shown in the figure. Their magnitudes are given in arbitrary units. Be sure to complete all parts (a) through (g).   a)  Determine the x-component of each of the three vectors... more
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Physics

09/12/22

Can you please show work?
A ball is thrown horizontally from the roof of a building 9.4 m tall and lands 9.4 m from the base. What was the ball's initial speed? Express your answer using two significant figures. 
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Physics

09/10/22

The total time the dog is in freefall.
An athletic dog leaps vertically to catch a frisbee, leaving the ground with a speed of 4.31m/s. Find the total time the dog is in freefall.
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Physics

09/10/22

UNIFORM MOTION question

What is the displacement of the race car drivers in the Indy 500? (A 200 lap race around a track)The diagram below shows the position of a cross-country skier at various times. At each of the... more
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Physics

09/09/22

A lens is cut into two equal halves (i) along the principal axis (i) perpendicular to principal axis. What will be the focal length of each half?
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Physics

09/09/22

Can anyone help me how to solve it??
A car is moving with uniform velocity of 61 km/h along a straight road for 10 mins. The driver then rapidly speeds up and then drives 39 km in 20 minutes. What is the average velocity in km/hr... more
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Physics Algebra 2

09/09/22

Kinematics lab question
Procedures Lay out a 50 meter course marking the ground every 5 meters. Leave 10 meters before and after the course for speeding up and slowing down. Position one timer and one data recorder at... more
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Physics

09/09/22

A long jumper leaps at an angle of 35 degrees at 9 m/s. How far will she jump?
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Physics

09/09/22

Please help me to solve this problem!!!
Which of the following position-time graphs depicts the motion diagram shown below:https://montclair.instructure.com/courses/164583/files/13727296/preview.
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Physics

09/08/22

if you deposit $900 today , how much will be in your account in 12 years if yearly interest is 4.25% compounded monthly
compound interest
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Physics

09/08/22

Two Dimensional Kinematics
The position of a particle is given by r = (at2)i + (bt3)j + (ct -2)k, where a, b, and c are constants. What is the velocity as a function of time? v(t) = ???What is the acceleration as a function... more
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Physics

09/08/22

Two Dimensional Kinematics
A ball is kicked from the ground at an angle of θ = 57 degrees with respect to the horizontal. The ball is in the air for a time tm = 2.1 s before it lands back on the ground.Numerically, what is... more
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Physics Calculus

09/08/22

Suppose an astronaut jumps from the bottom of a ladder on the moon.
It is 24 cm from the ground when it jumps. a gyroscope can accurately detect when the speed of the astronauts is greater than 1.0 m/s. the gyroscope detects his velocity to be 1.0 m/s (downwards)... more
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Physics

09/08/22

A particle is initially at rest and begins to accelerate to the right as 19.1t-t^2 m/s. How far does the particle move in 8.8 seconds?

Var Acc
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Physics

09/07/22

HW 1D Kinematics MultiSystem (agent, truck)
Secret Agent 006.5 (sadly, not quite as good as 007) is standing on a 10.0 tall bridge looking to escape! He sees a pick-up truck approaching, where the bed of the truck is 1.3 above the... more
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Physics

09/07/22

1D Kinematics MultiSystem (tackle)

Initially at rest, John catches a football at the 20 yard line, and immediately begins running forward with an acceleration of 1.5 m/s/s. At the instant John caught the ball, Bill (a player on the... more
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