greydeer783

A spelunker is surveying a cave. She follows a passage
180 m straight west, then 210 m in a direction 45° east of south,
and then 280 m at 30° east of north. After a fourth displacement,she finds herself back where she started. Use a scale drawing to
determine the magnitude and direction of the fourth displacement. (See also Problem 1.61 for a different approach.)

The inner workings of most electronic devices for diagnostic imaging are temperature-sensitive, in that they will not function properly if safe operating temperature is exceeded. However, these devices also include internal components that emit considerable heat within the device.

a. Provide TWO specific strategies that an equipment designer could employ to reduce heating of the temperature-sensitive components and explain how physics concepts are applied in each strategy. (2 x 4 marks)

b. Explain why warranty for many devices will be voided if the equipment is operated in a room with air temperature exceeding the limit specified by the equipment manufacturer. (2 marks)

A rocket is flying 500 meters per second at an elevation of 50 degrees to the horizontal. What are the vertical and horizontal components of its velocity? 

near the shore where the water is shallow, waves start to drag on the bottom. this creates ? that slows down the bottoms of the waves while the tops of the waves keep moving at the same ?

The 3.0 -diameter water line in the figure splits into two 1.0-diameter pipes. All pipes are circular and at the same elevation.At point A, the water speed is 2.0 and the gauge pressure is 50.

What is the gauge pressure at point B?


http://session.masteringphysics.com/problemAsset/1168690/1/jfk.Figure.P13.34.jpg

If water faucets upstairs and downstairs are turned fully on, will more water per second flow out of the upstairs faucets or the downstairs faucets?

Why do objects aim lower at the same velocity to reach the ground faster than a steeper object with the same velocity?

rotational motion 

a. draw free body diagram b. determine value of frictional force acting on the toy

determine the value of the coefficient of the given gravitational field constant 5.1 N/kg.

A physics professor leaves her house and walks along the sidewalk toward campus. After 5 min it starts to rain, and she returns home. Her distance from her house as a function of time is shown in Fig. E2.10. At which of the labeled points is her velocity (a) zero? (b) constant and positive? (c) constant and negative? (d) increasing in magnitude? (e) decreasing in magnitude?

a car is experiencing an acceleration of 2.0 m/s^2. if the driving force of the engine is 15000 N and the cars mass is 700 kg, what is the force of friction acting on the car?

a box is pushed horizontally up a ramp. Draw a Free Body Diagram indicating the applied Force being applied parallel to the ramp, normal force, force of gravity, and the force of friction.

Which of these processes combined with INCREASE in entropy? I. boiling water II. freezing water III. N2(g) + 3 H2(g) ---> 2 NH3(g) IV. Br2(1)---> Br2(g)

A ski jumper travels down a slope and leaves the ski track moving in the horizontal direction with a speed of 25m/s as in figure-2. The landing incline below him falls off with a slope of 35⁰. Where does he land on the incline?

What three factors affect the torque created by a force relative to a specific pivot point?

One end of a cord is fixed and a small 0.500kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.00 m, when theta is 20, the speed of the object is 8m/s. At this instant, find the tension in the string and the tangential and radial components of acceleration.

I have attached a picture of a physics problem...I am not sure how to figure this one out.

Does anyone know how to do this question?

The position-time equation for a certain train is xf=2.8m+(8.8m/s)t+(2.3m/s2)t2. What is the acceleration?
I tried 2.3m/s2 but it was wrong

The sound level at a distance of 5.0m from a concert speaker is 140dB. How far from the speaker must a concert goer be so that the sound level is 100dB assuming a spherical sound wave coming from the speaker?

What is the magnitude of the magnetic field of the bar magnet in the video when current-carriyng wire is in proximity of magnet? You can assume that the magnetic field is approximately uniform in the region of interest, and that the bar  magnet has a width of d = 2.5cm. Current of wire is I=0.738 A and reading on scale is 0.4 g when wire is placed closed to magnet on scale.

For a submarine, identify when it will have the greatest buoyantforce acting on it. Assume that neither the volume of the submarinenor the density of the water change. Choose all that apply.


1.When it is in dry dock and no part of it is submerged inwater.
2.When it is empty and fully submerged at a depth of 18 m.
3.When it is full of cargo and floating on the surface.
4.When it is full of cargo and fully submerged at a depth of 18m.
5.When it is empty, fully submerged, and resting on the bottom at adepth of 36 m.
6.When it is empty and floating on the surface.
7.When it is full of cargo,fully submerged,and resting on the bottomat a depth of 36 m.

I need full solutions for this question

An electron with a speed of 5.0x10^5 m/s enters into an electric field between two parallel plates through a hole in the negative plate and collides with the positive plate with a speed of 5.0x10^4 m/s. what is the potential difference between the plates?

an alpha particle with an initial speed of 5.10x10^4 m/s enters into an electric field between two parallel plates through a hole in the center of the positive plate. If the distance between the plates is 9.00x10^-2m and the electric field is 115 V/m, what will be the alpha particles speed when it reaches the negative plate?

01*. A displacement D of 100m from the origin at an angle of 370
 above the x-axis is
the result of three successive displacements: d1 of 100m along the negative x-axis,
d2 of 200m at an angle of 1500
 above the x-axis, and a displacement d3. Find d3. 
 [355m, 353.50
] 

what will the springs scale measure?

Which of these processes combined with INCREASE in entropy? I. boiling water II. freezing water III. N2(g) + 3 H2(g) ---> 2 NH3(g) IV. Br2(1)---> Br2(g)

at a point short distance from a 5.25x 10^6 C charged object, the electric field strength is 1.050x 10^6 N/C. what is the distance to the charged object producing this field?

If an alpha particle experiences an electric force of 0.325 N at a point in space, what electric force would a proton experience at the same point?

having trouble with this problem, any help would be appreciated

How do u make a anti magnet 

find the magnitude and direction of the vector represented by following pairs of components

1 Ax=-8.60cm,Ay=5.20cm

2 Ax=-9.70m,Ay=-2.45m

3 Ax=7.75km,Ay=-2.70km

 pick a Mars mission that is being considered for the future, go to its website, write a short report about its status and its purpose and mission

im currently building a dc motor. however, when i turn the coil, only one side seems to experience a magnetic force and hence it does not spin. how do i fix this problem?

I have this lab due by tomorrow morning and I dont understand any of this . 

f Figure (a) shows an 𝑥-𝑡 graph, which point has the largest instantaneous velocity (A or B or C)? (2) If Figure (a) shows a 𝑣-𝑡 graph, which point has the smallest instantaneous velocity (A or B or C)? (3) If Figure (a) shows a 𝑣-𝑡 graph, which point has the largest instantaneous acceleration (A or B or C)?